Re: What to call private parts?
We just call them privates. She know the name, but typically when referring to her private parts, we (& she) call them private parts.
I do see the advantage of calling them by their correct names, but we have a woman on the block who "brings her potty training outside" (the kids run naked in the front yard, and this is an urban area) and the kids yell the terms constantly, and have been known give anatomy lessons to anyone unlucky enough to walk by.
I must say, it is a bit uncomfortable, I can totally see it happening on occasion, but it has grown to be a regular thing.
I think, for us, using the term "privates" was a response to this.