I've just got back from taking my dd (6) to her dance class this morning at the local leisure centre. As I returned to collect her I passed a car in the car park that had a baby (around 1-18months) and a boy probably about 5/6 in a car on their own. The mum had just gone in taking her other child (3ish) to collect her eldest from the same class. Normally the lesson finishes at 10.30 but as we got there we were told it would be another 15 minutes until pick up. She looked a bit concerned and said, "oh dear" but then stayed for the full 15 mins leaving the kids outside alone in the car! I don't know her at all and she obviously wasn't aware of what I had seen. I had to nip out to get something from my car and checked on them as I walked past. They seemed happy enough, the baby snoozing and the little boy playing with a toy car. Since getting home I feel annoyed I didn't say anything to her, but tbh I was a bit dunbfounded at her! She did the same thing last week but was in and out within 3 mins. AIBU to stick my beak in? Should I report her to receptionist? I know I'm a right worrier and bit paranoid about abductions or the 101 things that could go wrong but I just couldn't imagine leaving my dc like that. She seems a nice mum in all other respects, quietly chatting with the one she'd taken in etc just her casualness about it all made me wonder if there's not a lot 'upstairs' if that doesn't sound too mean.
If it happens again next week what should I do??? It's really playing on my mind now.