Not really, my wife sometimes goes out with her girlfriends and they would stay in a hotel overnight instead of having to come home late at night, and if she says it's a girls night out that's what she means,
If she was going on the prowl for some strange cock she would tell me and she would text me at least if she was going to bed with someone other than her girlfriend of course it helps that she likes a little girl on girl action so I can be 99%sure that is what she is having, 👍