My ex was a narcissist (lesbian relationship), and we lived together for 3 years too long. She was the kind of woman that thrived on confrontation and had a degree in arguing. She was very passive-aggressive and lacked empathy most of the time. She would always gaslight me and tell me I was the crazy one whenever I tried to confront her.
In the end, it was mutual friends who helped me to realise it was an abusive relationship, and 4 months ago I told her I was breaking it off and moving out. She didn't even seem to care at first, then tried to stop me, then went back to not caring.
After I moved out I cut all contact with her and vowed never to speak with her again. I managed to find some nice new roommates and it since has dawned on me how badly she treated me.
But I just checked my bank statement and I found that I'm still paying one of her bills. She told me she had removed my name from the account but it looks like this wasn't the case. I immediately cancelled the direct debit and I sent my ex-landlord a copy of the bill and asked if he'd kindly get her to give me a refund. But he told me she's refusing to pay unless I ask her for it myself.
I don't understand why this is necessary - there doesn't need to be a discussion. Now I'm torn between giving in and contacting her or losing out on money. Any advice?