Dd2s best friend is our friends daughter, we know her well and they are both sensible together. It’s no extra bother to have her friend over.
Dd1 has had all sorts of friendship issues, all partly her fault. She doesn’t have a best friend that she hasn’t had some sort of fall out with in the last year, we also don’t know any of her friends or their parents that well. It’s extra stress to have any of her friends over and wouldn’t trust her to be behave.
Is it reasonable to invite dd2s friend on weekend trip but not let dd1 invite a friend?