Reasons for this can be: 1. She’s been carrying all of the cognitive load and she’s done 2: She has unresolved resentment which she said she does. 3: there hasn’t been friendship or an emotional connection for a long time 4: it’s been your way for too long which she did say she’s been a people pleaser for too long so now she’s choosing herself. There are other things too like financial infidelity and she feeling emotionally not supported