Sorry for vague title!
DD(4) started school this year. I am a single parent but actually chose to go down this route: as such, DD is the result of fertility treatment with donated sperm.
I have always been honest with her about this but we also know that while it isn't a secret it is private. If DD wishes to share when she's older that's fine.
I have had a lot of questions about DDs father - I have so far fudged things by saying 'oh, she doesn't have a dad!' with a smile. However, a couple of school gate mums have asked - curiously rather than nosily - what happened to him. I have simply kept things vague, along the lines of 'we don't see him' and so on.
Any ideas on how I can deflect the questions without resorting to rudeness? They aren't horrible women at all: I just feel the circumstances surrounding DDs conception aren't mine to share.
Thanks :)