I asked her age . She said 25. And I am certain she is telling the truth. I know what she is studying and where, and I am certain she is telling the truth. Her massage is rubbish btw. But this is fs with ow. But I just liked her. She is fun and cute, and we got on really well.
You don't say if her friends are also students, if they're "civilians", if they are also Thai.
I can imagine a few scenarios where being introduced to them isn't such a big deal.
If the friends are also engaged in similar activity, it's no biggie to see someone else's customer.
Now you've met them, in the future they might be offered to you as an alternative, so as not to disappoint you as a customer, if Nana is busy, studying or something.
If the friends think Nana is dating you, it might be part of her cover story to prove to them you exist.
Time will tell.
You go for it mate. Enjoy yourself.