It's definitely changed the friendship with her. It's funny how you can get to a certain age and still it feels like you're "not one of the cool kids anymore." (I don't know that I ever was that cool.)
When I told her, it was in a heart-to-heart conversation with her and another friend. Her response was "well, I suppose if you think you have a problem." It was a let down. I've had to avoid the temptation not to read more into it -- including thoughts about her own drinking volume and frequency -- which I've done successfully sometimes. Sometimes not.
I've pretty much come to peace with it. We still do things together and have a nice time. It's just a little hard to see the occasional post of her with others (and drinks) on a FB post. Part of that, too, is that once she remarried she also became one half of a couple that chooses to spend much of their times with other "smug marrieds" (remember "Bridget Jones Diary"?). It is what it is. Sigh.