Just wanted a few opinions on this really as I'm not sure what to do... fairly first world problem but it's got me really prickled
My lovely friend invited my 8 yr old DS to her village's Halloween party. Low key village hall affair, £5 entrance, the more the merrier kind of thing.
DS super excited, we've got the costume ...first time he's ever wanted to dress up... all good!
Then another mum from the village (and also a mum from my DS's school) then told my friend (pretty rudely apparently) that my DS can't go as only the children in the village are allowed to go. She knows my DS thinks he's going.
AIBU to think that this is mean, petty and unnecessary 
What would you lovely peeps do?