Hi, yes I’d be concerned about the driving and drinking too, where I live it’s legally possible to keep within the alcohol limit and still have a drink but many people choose zero alcohol because even a small amount can affect judgement/reaction times. That’s not cultural- it’s proven fact. Like Azul suggests can you drive? Or use taxi or public transport?

Loosening up with a drink is common, yes I’ve done it and when I was younger more so, sometimes to excess. It’s a matter of judgment whether she’s within sensible parameters or not, how much in total she drinks, whether it’s impacting her life - the fact you’re flagging it up means there might be a problem if you’re worried about it. I’d say it’s something you should feel able to discuss calmly (when you’re both sober).