
We've all done and said things that we wish that we hadn't. Sadly, none of us can go back in time and change those things. All that we can do is accept that they happened and move forward from there.
Boundaries are important things to have, but they should be handled in a way, as much as possible, that does not trigger the person with BPD. That isn't to say that you tip-toe around when trying to define and maintain your boundaries, but as stated in the lesson about
Setting Boundaries, you need to educate and inform the other person about the boundary.
When you enforce your boundary about not engaging with her when she's insulting you and/or your family, how do you communicate that to her?
There is a lot of great information on this site that will help you learn to deal with your situation in a healthier manner. I suggest reading the basic tools in the sidebar to the right. I think that the lesson on
Ending Conflict is a good place to start.
Keep us posted about what is going on.