Ok so I was at school picking tiddlies up when I'm sat in the playground with 4 kids already and waiting on two more coming back from a trip. There is just us and another parent on her phone with a toddler in her pushchair, talking VERY LOUDLY swearing etc. I'm gobsmacked. Should I have said excuse me can you mind your language there are kids around or just ignore, even though all my kids gasped and younger ones repeated what she said?