Ok, here goes, but shorter.
I had a friend for many years who was very intense and clingy. I would ask for a bit more space and be guilted for it. It ended when she angrily called me, telling me I needed to call her each day. Blah blah blah, anyway I realized all the times I had absorbed her anger and drama and really wasn't being heard myself. I decided to end the energy suck and told her we couldn't be close friends anymore. She really freaked out, saying I was a robot etc. It was messy.
I realize now that I didn't do her any favors by not having clearer boundaries. She called me last summer to tell me she was seeing two therapists and had stopped drinking altogether. I don't know if she would have taken steps sooner if I hadn't babied her along. I don't know. Sigh.