It sounds like you're bringing some big assumptions to the sobriety question. Like that a person is either sober or not. To me, the term sober suggests an underlying problem that's either active or in remission. But most people who drink do not have an alcohol problem, they are neither sober nor drunk. Furthermore, even if your T is sober or a recovering addict, that doesn't mean that she cannot wrap her around the fact that most people can drink in moderation without any problem or that she's judging you for having a beer or two.

Your question as to her sobriety is no doubt very loaded for you. It's probably more important for you to understand your own feelings, attitudes and experiences around alcohol and your expectation of being judged than it is to find out about your T's drinking habits.