Complex sentence: Shir was born into a wealthy and well-to-do family in Motavia and was blessed with the best education and had everything she could even desired, but wanted to seek adventure since she was provided little of it, thus becoming a thief.
Split into simpler sentences: Shir was born into a wealthy and well-to-do family in Motavia. She was blessed with the best education and had everything she could even desired, but wanted to seek adventure since she was provided little of it, leading her to become a thief.