it sounds like she has problems much deeper than alcoholism. if you continue to stay with her and let her keep coming back, you are enabling her to continue the same behavior, which indicates there is also a problem with you.
let her keep doin it and love her to death or let her go, let her seek help, then love her to life.
it didnt matter who tried to help me stop drinking when i was drinking. i had to have the help from people that had been in my shoes and the best move anyone who was around me when i was drinking made was to walk away from me.