Perhaps you can send her a message by breaking it in the sink?
Hey Mom, watch my new trick! *Smash!*
TA DA!
Then again, I'm not known for my subtlety. You have to look out for yourself right now. If something is threatening your sobriety, you distance yourself from it. Tell her if she wants to drink to keep it in her room, because any bottle that passes into the rest of the house will be shattered on sight. It's your house, your sobriety, your rules. JMO.