How to respond to judgy parents

[RosieOJK]

I was having a conversation with one of the parents at ds (age 7) school and mentioned my dsd. They asked how old she was so I replied that she was 10. There was a very definite eyebrow raise and then they said commented on them being very close in age. I didn’t really know how to respond. I see it probably does seem quick but fwiw dh split with ex when dsd was a baby and we got together some 6 months later and had ds when we had been together just over 2 years so there was no overlap which is what I assume she was implying? What’s the correct response here??

I think the correct response is no response at all. It is none of her business.

That’s what I thought, however now I’m wishing I had stuck up for myself a bit more as I’m concerned she’s going to tell other parents I’m a home wrecker.

I would either just say nothing to that or call them out on it by saying “what do you mean”.
When I’m out with DSD and my DC I’ve had people mention the big age gap between them and I just say nothing as it’s no one else’s business

Ignore her, she's a twat. It'll be someone else's business she has her beak into tomorrow.

I literally cannot imagine caring what they would think.