Monopolizing your time like that is a form of abuse tbh. She is being an emotional vampire and stopping you from doing things you need to do and living your own life.

I’ve been diagnosed with EDD, which seems to be another name for BPD, which is confusing to me, but anyway—

It’s interesting how different I handle things, like to cut someone off with no qualms about it, lol. I’ve had to be that assertive with unbelievably pushy people.

I agree that a clean break may be best. Her behavior is so extreme that I worry about whatever you do to get away from her.

But you do need to escape from this control issue. This person sounds extreme to me.