More context needed. For instance would you be concerned if she was alone on a school night and had worked her way through a 750 ml bottle of soft drink (with its own health problems long term) or is it just the wine that causes concern?
is she drinking AF or low alc wine or right up to the 13% stuff ? (Noted on the label).
are you a good enough friend to need to know the details if she is trigger drinking and if so, what are your thoughts of in helping?
personally I fell into the routine of drinking a full strength bottle every night and realise now the landmarks in the 16 year period that kicked it off.
Could a ‘Friend’ have helped me, I’m not sure but having access to women’s health sites on fb, being honest with my GP, knowing I didn’t want to upset my family and not consuming as much but feeling the positive difference, has helped.
but as a friend, if this is what you are thinking of helping with, be aware unless the person is ready to talk you are wading into murky waters.