I would feel disrespected is she did this while sober.... but seeing that she was impaired and has an obvious problem / addiction with alcohol, I would see that she gets some immediate help (counseling or inpatient care).
You need to be the mature one here and talk to her about her actions in a non-threaten way and with as much love that you can possibly muster.
Good Luck.... and hang in there, for all things are possible to those that seek a change.

LoVe,
Rhapsody -