She’s a sex educator and is mad about this being taught in 5th grade?
My first sex Ed classes were in 4th grade.
Also. This is literally just anatomy. Nothing sexual about it. Just the human body.
And if her daughter isn’t going through puberty (still on the young side) some of her classmates might be. And their parents may not be able to talk about these things.
Plus. This kind of education is vital to help children who are being sexually exploited have the words to articulate what is happening to them.
Abusers thrive on children being ignorant and not being able to explain what an adult may be doing to them.