Long story short is that DD has been invited to stay over in a hotel with her friend while friend's mum is involved with an event at the hotel. DD's friend's mum says the girls can use the spa facilities etc and also chill out in the room. I said yes to this and now I'm getting anxious about it as they are 2 months shy of turning 16, just finished GCSEs, and I don't think they will be allowed in the spa with no adult supervision and also I just don't like the idea. i wish I said no from the beginning and now regretting it. AIBU? Thanks