I think you did that right thing. I too have been screwed over by friends even when I didn't say anything because I didn't want them to get mad. Well guess what??? They left me anyways. They used me until they didn't need anymore out of me.
The feelings that you are having are totally NORMAL. You have every right to feel the way you do. It's like losing a friend, when you kinda already lost her a while ago. I know how that feels.
I hope you take good care of yourself. You are a very special person, and deserve friends who are there for you and treat you right.
Please PM me if you ever need someone to talk to or just to say how you are doing.
Please don't be hard on yourself.

Hugs,
Jen