Do I help her when she asks for it? Do I still do favors for her when she needs them? This is what I'm struggling with. I don't want to close the door forever, but I also don't want to be her crutch and let her walk all over me.
you don't want to close the door forever? sounds like she's already doing that. you don't have to lift a finger.
if you want to be a doormat, then help her. if you've been helping her all along and it hasn't stopped HER from closing the door. then what does MWD suggest? do something different.