I have namechanged for this for obvious reasons and changed some of the details to make it less identifiable)
DD has a friend whose single mother is a prostitute.She has been invited to a party at this friends house.
I am very naive about all this sort of thing , but the mother dresses normally and lives in a rented cottage in a nearby small sleepy village from where she plies her trade, I assume (hope!) only when the child is staying with their dad or at school.She keeps herself to herself and doesn't cause any trouble in the village as far as I know
Her Dc is a sweet child with serious health issues who DD is fond of, and the mother has clearly been to a lot of trouble planning the party.
DH says that DD should not have anything to do with the woman or her child.
I feel a bit sorry for the child, but my main fear is drugs, and although DD doesn't know what prostitution is now, she will do one day and I fear normalising it in her eyes.