I don't know specifically. The second one once said something about not having smoked pot since the 70s so I would guess she also drank some. I don't think she was someone who struggled with addiction issues from what she has said. The first one once said she did not drink but also talked about wine a different time - she contradicts herself a lot. And while I feel certain she has a pile of issues, I don't see any indication that addiction is her struggle either.

I never heard of dividing the world into sober or alcoholic until I dated a recovering alcoholic. My mom was a moderate drinker and my dad did not drink anything until his 30's and now only drinks wine moderately - I grew up thinking people just drank moderately.
I don't think about or care if therapists drink or not or use other substances.