I think it was very wrong of that mother to put herself on the level of the children(labeling your daughter as "illiterate") she, instead of stopping the insults is feeding into it as well. I don't understand parents that do that.
Lynn-- You would never think of talking to another child like that because you are wise and a good person-- who doesn't stoop to lower levels.
I hope your daughter can learn how to handle things in a positive manner from you and not from that other mother with her immaturity and negativity.

I'm so sorry your daughter is being subjected to the fall-out of porn. it sucks, I'm so so sorry.
and then, some men and boys wonder why women and girls are wearing clothes making statements that demean/degrade men???? ("boys are stupid", "All men are idiots, and I married the king") duh!!!.....

sorry I don't have advice-- just wanted you to know I'm here.

fins