My daughter is in a small school and her class is only 8 children. All girls. They have small 2-3 person sub friendship groups but also get on well as a class, theyre a nice group. One of the others is having a birthday sleepover and has invited 5 (so six of the class in total will be there) and left out my daughter and one other. Because its such a small school and class this is her (and my!) first experience of something like this. Usually parties are 2s and 3s or its the whole class. My daughter is really upset because she felt this girl was and is her friend. On one hand I do understand her mum limiting the sleepover ( I wouldn't want more than 3 to sleepover at ours personally, it'd be crazy!) But I feel really upset for my daughter. Am I being oversensitive and this stuff happens all the time everywhere else? Or is it reasonable for us both to be a bit upset by it. I've obviously spoken to her and had a chat about not everyone can be invited to everything etc but it's bothering me.