Complex sentence: She was then adopted by a family that moved her to Aix-en-Provence, being abused by a family member and constantly quarreling with them, which led to an intense distaste for authority that stayed with her the rest of her life.
Split into simpler sentences: She was then adopted by a family that moved her to Aix-en-Provence. Within that dysfunctional family, she was abused by a family member and constantly quarreling with them, which led to an intense distaste for authority that stayed with her the rest of her life.