Oh Babe,
God i feel for you. It is so hard. I'm learning this through personal experiences. My eldest is 11 I'm very protective,but i'm getting better. Little things that have happened over the last 2 weeks. My son said "Mum i have a special secret to tell you" I said "What honey"He said close the door its really special. There is a girl in his class at school and her girlfriend went up to my son and said Emily really likes you.Caleb(ds),didnt get IT. So the girlfriend Re itterated. No she REALLY likes you. She thinks you are cute and funny and she likes your jokes. I can only imagine how he blushed because he blushed as he was telling me. But then he said "Mum you know the best thing of all is that i REALLY like her too and she dosent even know. I just thought how cute!!!
Then a few days ago the kids said can we go 4 houses down and say hello because there are kids out the front and we want to play with them. I said no.Then the kids were like mum, we have lived here for 8 months. How are we ever going to make friends if you wont let us out of your sight for a minute?Then i really analysed things. i thought they are so right. I need to let go a little;just a little. so i supervised over the fence and told the kids they had half an hour to get aquainted and then they could all play out the front-where i could see them. Then they came and introduced themselves and let their parents know where they were, and i let them stay for 30mins. nice kids. But 30 minutes is long enough.One of the kids a boy is 16 though and Caleb didnt understand that i didnt want them playing alone together. a 5 year age gap is too much,but i said he was welcome here;so i could supervise. As for the sleepovers he has had heaps and we have had lots here but only because i'm very close with the parents. I think just like you i would have an imposible time with it if i didnt know the parents.As for the camp let her go. its a good,safe enviroment.It will do you both the world of good. When Caleb went on his 4 day camp with scouts ,when he returned i watched the bus pull in and he was already crying when he saw me at the bus stop. He was the first scout off the bus(and got best scout at camp)and all i could hear was him yelling "Mummy"unashamedly. And we cuddled and cuddled and he had so much to tell me. It has helped him to be more independant and realise that his actions have repercussions. that he is getting big enough to be responsible for himself and to develop his own problem solving skills.But it is so very very hard to release that bind. I want them with me all the time but i tell myself that i'm actually hindering his social development if i cant force myself to let go a little. Thats the only way i get through it.
HTH
Goodluck with it-i know its very hard