About 2 months ago I went to daycare to pick up my sons. When I got there, I was pulled aside by one of the teachers who told me that my oldest son (5) and his friend (also 5) had to be separated and both be put into timeout because they were "exposing themselves" and basically "measuring/comparing" their dinkles. I was a tad upset by this (to say the least) especially with all the talk recently about young kids being accused of sexual assault at daycare centres and in primary schools.
When we got home my husband spoke to my son and told him that what he was doing was wrong and he could get into very big trouble for doing things like that.
And now, Just recently, my youngest (2), has started to try and put his "doodle" on us whenever he gets out of the shower. As funny as it is (because he runs around the house holding himself and yelling out "doodle") we are trying to stop this kind of behaviour.
Unfortunately Barbie, I am guessing this is all just part of growing up. And these days anyway, kids seem to be growing up too fast.
My only advice to you would be to just let your daughter know that she can talk to you (like you seem to already be doing) and just instill strong morals in her.
Good Luck..... this is the kind of thing that makes me glad I have two boys.