Is this appropriate? As I would never do that.

[nocarbsandsugareveragain]

Ok we all know each other from kids school(myself and partner and the other couple - couple B)

I have gone out the other lady and some other mother a few times. She is like a school mum friend to me (not close)

Our kids are in the same class and are friends

Go to same clubs etc DS just started the football club in the last few weeks so DH is now on what's app group of the football club and I am not. This is how she (of couple B) is got DH's number.

DH does not talk much at all and only know the couple on a hello hi bases

DH just told me she's privately messaged him asking him if he can take their son to football next week because they are going to a funeral and of course he's said yes. I don't have an issue but I am thinking I would never do that in a million years, message someone else's husband or partner privately asking for anything. I would have messaged the lady asking her to ask her DH if he can help get their child the club. Or is it because she knows I don't ever got to the club?
Or am being unreasonable and that's the way things are done here? Sorry I am from a different background and culture

“I would never message someone else’s husband”

This makes you sound completely bonkers. He’s an actual person, just like you’re an actual person and not “someone else’s wife”. Are married people only ever allowed to communicate with people of the same sex? It sounds like the club is his responsibility so why would she go through you? If a woman messaged me to ask my husband something instead of asking him herself I’d think she was odd. I’m not his PA and I don’t gate-keep his conversations

Why does he need a chaperone and to kept on a lead? Why on earth is this an issue?

It's fine. It would be odd if she messaged you really, given the set up.