I had just bathed 2 year old dd and took her to the living room where her GP were sat. I gave her her milk and put on ITNG. She was sat right next to GPS and I said to them "I'm just going to shut the door to the conservatory because I don't want her going outside now and I'll be upstairs bathing other dc."
I was upstairs for about 20 minutes and popped back down for something to find they'd buggered off out to the conservatory to sit and left dd in the living room on her own. The door between the house and conservatory was closed so they couldn't hear her and our house is quite large so they couldn't see her.
AIBU to be a bit pissed off
a) because they should have told me she was now unattended and
b) they're going home tomorrow so it would have been nice if they'd sat with her for a bit
At one point she pressed her nose up to the glass and tried talking to them. They just sat at looked at her 
I'm not exactly fuming but Ibam a little shitty about it. It's been the icing on a very long weekend...