sometimes boundries are too crossed once too many times. You've got to decide when that point arrives. You have to do what make things healthy for you and your family. Sad but true...sometimes you have to lose a friend when that friendship becomes toxic.
i underrstand..i've done the same thing as you with a friend whose alcoholic behaviour finally became poison. I still feel a little sadness 15yrs later.
Whether you are right or wrong for ending it depends on your reason. When you start a new friendship nothing is ever exactly the way it seems. If you have made a reasonable effort to be friendly and it seems like your 'friend' is just taking advantage of you, then you probably did the right thing. I know from experience it can be hard to see when a 'friend' is doing you wrong. The only consolation I have found is the knowledge that you can not lose a friend that you never really had to begin with.
beefrog2012 it sounds to me as if you are better off without her. With 'friends' like this who needs enemies?
(which I only put in my name this year to make sure she didn't want it back)
and i stopped there.