Sounds like maybe she has her own issues with substances. My husband is an active alcoholic. When he’s sober he can hear my arguments and understand where I’m coming from. Once he starts drinking, all bets are off. He will get completely trashed and leash out at me if I’m in the same vicinity as him. Unfortunately, I think it’s just what addicts do. I remember when I was an active alcoholic that I didn’t care about anyone or anything, I only cared about getting the next drink.