I don't think you are being selfish. You just want your best friend to be close by and have the same friendship as you did years ago. She is the one being selfish because she isn't being transparent and you being her PVO or whateevr it's called. I think after a while of seeing her going down hill and not caring or listening to you or the doctors meaybe she just wants to be left alone? Hopefully she will relaize what she is losing and try to fix it?