Getting over being angry? Money issues with family? Am I wrong in this?

I have a sister that is like that. Long story short we haven't spoken to or seen each other in almost 2 years. Yes I miss having her in my life but at the same time I can't trust her. She knows that she can come back into my life when ever she wants to but I have to be able to trust her before I can allow her back in. Some time people don't see what they are doing hurts people and unfortunately it takes a lot for them to step back and see it. As far as the money she owes you goes try to forget about. You probably will never see it again. One thing I've learned is don't ever give any one any money unless you can afford to never see it again that way you wont get mad over money so much. Part of the problem is you have to tell her no I'm not giving you any more money. That's what happened to my sister and me. Yes we don't talk to each other any more but she isn't taking advantage of me and using me as a doormat any more. Just tell her you can't keep giving her money and leave it at that. What happens from that point on is on her not you. That's what I had to do.