I don't know what else to say other than my parents would have taken me to jail themselves for minor under the influence if I had come to their home in that state. While I was in jail, they would have calmly and methodically packed my things and left it on the front porch for me when I was released. That is, the things they decide I can take with me.
My folks didn't mess around.
She may be an adult, but enabling is enabling. If she has no rules and no consequences, she won't stop her behavior. Shoot, I wouldn't either!