Question: What did the wife of the 15th Mughal Emperor serve as?

full_context: Document 1: Zeynab Begum: Zeynab Begum (also spelled Zainab or Zaynab; died 31 May 1640) was the fourth daughter of Safavid king Tahmasp I (r. 1524–1576), and considered to be one of the most influential princesses of the Safavid era. She lived during the reigns of five successive Safavid monarchs, and, apart from holding diverse functions, including at the top of the empire's bureaucratic system, she was also the leading matriarch in the royal harem for many years, and acted on occasion as kingmaker. She reached the apex of her influence during the early reign of king Safi (r. 1629–1649). In numerous contemporaneous sources, she was praised as a "mainstay of political moderation and wisdom in Safavid court politics".
Document 2: Mughal emperors: The Mughal emperors, from the early 16th century to the early 18th century, built and ruled the Mughal Empire on the Indian subcontinent, mainly corresponding to the modern countries of Bangladesh, India and Pakistan. The Mughals were a branch of the Timurid dynasty. Their power rapidly dwindled during the 18th century and the last of the emperors was deposed in 1857, with the establishment of the British Raj. The dynasty had Turco-Mongol roots from a Central Asian area now part of modern-day Uzbekistan, and the emperors claimed direct descent from both Timur (generally known in the West as Tamerlane the Great) and Genghis Khan, through his son Chagatai Khan.
Document 3: Mirza Muhammad Hakim: Shahzada Mirza Muhammad Hakim (29 April 1553 – 10 October 1585), sometimes known simply as Mirza Hakim, short: Mirza, was the second son of Mughal emperor Humayun. He ruled Kabul in Afghanistan, and often conflicted with his elder brother emperor Akbar. Mirza Hakim later on mended ways with Emperor Akbar. He is the son of Mah Chuchak Begum. He is known for writing Tajdar-e-Haram(King of the Sanctuary)
Document 4: Mahmud Hotak: Shāh Mahmūd Hotak, (Pashto, Dari: ), also known as Shāh Mahmūd Ghiljī (Pashto: شاه محمود غلجي‎ ) (lived 1697 – April 22, 1725), was an Afghan ruler of the Hotak dynasty who overthrew the heavily declined Safavid dynasty to briefly become the king of Persia from 1722 until his death in 1725.
Document 5: Ahmad Shah Bahadur: Ahmad Shah Bahadur, Mirza Ahmad Shah, Mujahid-ud-Din Ahmad Shah Ghazi (23 December 1725 – 1 January 1775) was born to Mughal Emperor Muhammad Shah. He succeeded his father to the throne as the 15th Mughal Emperor in 1748 at the age of 22. When Ahmed Shah Bahadur came to power the rule of the Mughal Empire was collapsing, furthermore his administrative weaknesses eventually led to the rise of the usurping Feroze Jung III.
Document 6: Parhez Banu Begum: Parhez Banu Begum (21 August 1611 – 1675) was a Mughal princess and the first child and eldest daughter of Mughal emperor Shah Jahan from his first wife, Kandahari Begum. She was also the older half-sister of her father's successor, the sixth Mughal emperor Aurangzeb.
Document 7: Rafi ud-Darajat: Rafi-ul Darjat (1 December 1699 – 13 June 1719), the youngest son of Rafi-us-Shan and the nephew of Azim ush Shan, was the 10th Mughal Emperor. He succeeded Furrukhsiyar on 28 February 1719, being proclaimed Badshah by the Syed Brothers.
Document 8: Muzaffarids (Gujarat): The Muzaffarid dynasty, sometimes referred as Ahmedabad dynasty, were sultans of Gujarat in western India from 1391 to 1583. The founder of the dynasty was Zafar Khan (later Muzaffar Shah I) who was governor of Gujarat under the Delhi Sultanate. Zafar Khan's father Sadharan, was a Tanka Rajput convert to Islam, adopted the name Wajih-ul-Mulk, and had given his sister in marriage to Firuz Shah Tughlaq. When the Sultanate was weakened by the sacking of Delhi by Timur in 1398, and Zafar Khan took the opportunity to establish himself as sultan of an independent Gujarat. His son, Ahmed Shah I established the capital at Ahmedabad. The dynasty ruled for almost 200 years, until the conquest of Gujarat by the Mughal Empire in 1572. The sultanate reached its peak of expansion under Mahmud Begada, reaching east into Malwa and west to the Gulf of Kutch.
Document 9: Bahu Begum ka Maqbara: Bahu Begum ka Maqbara is the Tomb of Queen Bride Begum Unmatuzzohra Bano alias Bahu Begum a memorial built for queen of Nawab Shuja-ud-Daula. Its one of the tallest buildings in Faizabad and is a beautiful example of non-mughal Muslim architecture. The Mausoleum of Bahu Begum created by Nawab Suja-ud-Daula in the memory of his loving wife is famous for the creative architectural brilliance with which it was designed and constructed. Shuja-ud-daula's wife was the well known as Bahu Begum, who married the Nawab in 1743 and continued to reside in Faizabad, her residence being the Moti-Mahal. Close by at Jawaharbagh lies her Maqbara, where she was buried after her death in 1816. It is considered to be one of the finest buildings of its kind in Avadh, which was built at the cost of three lakh rupees by her chief advisor Darab Ali Khan. A fine view of the city is obtainable from top of the begum's tomb. Bahu Begum was a woman of great distinction and rank, bearing dignity. Most of the Muslim buildings of Faizabad are attributed to her. From the date of Bahu Begum's death in 1815 till the annexation of Avadh, the city of Faizabad gradually fell into decay. The glory of Faizabad finally eclipsed with the shifting of capital from Faizabad to Lucknow by Nawab Asaf-ud-Daula.
Document 10: Muhammad Parviz: Muhammad Parviz (2 October 1589 – 28 October 1626) was the second son of Mughal emperor Jahangir from his third wife, Sahib-i-Jamal Begum. He was also a grandson of the third Mughal emperor Akbar. His daughter, Nadira Banu Begum, later became the wife of Dara Shikoh.
Document 11: Amina Bint al-Majlisi: Amina Begum Bint al-Majlisi was a female Safavid mujtahideh. She was the daughter of the great Safavid religious scholar Mulla Muhammad Taqi Majlisi and granddaughter of the mujtahideh Zubaiyda, who was in turn the daughter of the great philosopher Mulla Sadra. Amina's brother was Mulla Muhammad Baqir Majlisi, the author of the well-known work Bihar al-anvar, to which Amina contributed. She married a student of her father's, Mullah Muhammed Saleh Mazandarani. The family lived in Isfahan, the capital city of the Safavid Empire. The city of Isfahan has a long educational tradition of Shiite ‘Alimat (Islamic preachers) and Muhaddithat (traditionalists). The practice reached to a peak during the Safavid era.
Document 12: Miangul Adnan Aurangzeb: Miangul Adnan Aurangzeb is an engineer, former member of Parliament MNA and the current head of the former princely family which once ruled Swat princely state. He is the eldest son of Miangul Aurangzeb and the eldest grandson of Miangul Jahan Zeb (the last ruler)
Document 13: Nasiruddin Nasrat Shah: Nasiruddin Nasrat Shah (Bengali:নুসরাত শাহ ) 1519–1533 (died 1533), son of Sultan Alauddin Hussain Shah, was sultan of Bengal from 1519 until his assassination in 1533. He married Ibrahim Lodi's daughter. He continued his father's expansionist policies after succeeding him, adding more territory to his sultanate early on in his reign, but after 1526 had to contend with the Mughal ascendency, and also suffered a reverse at the hands of the Ahom kingdom.
Document 14: Qudsia Begum: Qudsia Begum (died 1765), was a wife of Mughal emperor Muhammad Shah and mother of emperor Ahmad Shah Bahadur. She was an administrator and served as de facto regent of India from 1748 to 1754.
Document 15: Akbar: Abu'l-Fath Jalal-ud-din Muhammad Akbar (15 October 1542 – 27 October 1605), popularly known as Akbar I (, literally "the great") and later Akbar the Great, was the third Mughal emperor, who reigned from 1556 to 1605. Akbar succeeded his father, Humayun, under a regent, Bairam Khan, who helped the young emperor expand and consolidate Mughal domains in India. A strong personality and a successful general, Akbar gradually enlarged the Mughal Empire to include nearly all of the Indian Subcontinent north of the Godavari river. His power and influence, however, extended over the entire country because of Mughal military, political, cultural, and economic dominance. To unify the vast Mughal state, Akbar established a centralised system of administration throughout his empire and adopted a policy of conciliating conquered rulers through marriage and diplomacy. To preserve peace and order in a religiously and culturally diverse empire, he adopted policies that won him the support of his non-Muslim subjects. Eschewing tribal bonds and Islamic state identity, Akbar strove to unite far-flung lands of his realm through loyalty, expressed through an Indo-Persian culture, to himself as an emperor who had near-divine status.
ground_truth: de facto regent of India