DD2 4 has been invited to a birthday party today. She would occasionally play with the girl at nursery but they aren't really friends and haven't had any contact over the summer. The venue is a 30 minute drive away and I'm not sure if I am going to be able to stay with her because the invite stated Please leave your child where possible as we have limited space, She won't stay on her own as she is quite shy. I did RSVP to say she was going and that I would have to stay with her, which I never had a reply to. Would I be unreasonable to not go, as I don't want to drive all the way there and be told I can't stay.