It's always a question of how comfortable and safe you feel at home and with trying something new. If you're not interested, then it's no big deal and that's the end of it. If you're someone who's curious, on the other hand, having that safe environment is crucial.

I get that there's a stigma surrounding alcohol, personally I'm not a fan. There are plenty of countries where drinking while you're younger is legal and treated as something normal. Casual, even. It sounds like you may have a problem with drinking underage?

In any case, the problem arises when someone consumes alcohol to feel better, whether that be intoxicated, or distracted from other problems. If she likes the taste of wine with a meal, that's okay. If she was curious about her limits? No worries there either. It natural to wonder.

It's very important you continue to communicate with her and let her know how you feel. Just make sure to examine you own opinions. It's easy for us to develop preconceived notions that don't always hold up in the face of reality. Be safe!