Complex sentence: She was introduced to films by Chetan Anand of Navketan Films with the film "Baazi" in 1951, in which she co-starred with Dev Anand, and with whom she worked in all her subsequent films.
Split into simpler sentences: She was introduced to films by Chetan Anand of Navketan Films with the film "Baazi" in 1951. She co-starred with Dev Anand, whom she worked with in all her subsequent films.