It's been a couple of hours since the OP posted, but in case you are still reading your thread; I do think that YABU, and may have over-reacted to this considering it is a standard talk where they were given examples of the most common types of sanpro.
My aunt (who raised me) 'discussed' sanitary protection with me when I was 9/10, but it was done in such a way that I was fully discouraged from disagreeing with her opinion in any way, shape or form. She had decided that tampons were not the right thing for girls to be using and over the course of time guilted and pressured me into agreeing with her. In her eyes, only morally impure people used tampons; sanitary towels were what good girls used.
Once I hit puberty and started periods I loathed and detested towels - great bulky brick-like things that had loops on which fitted onto a belt to keep them in place, and I was desperate to use tampons. I wasn't the only one in that situation either - many of my peers had parents who taught much the same thing, or worse.
The girls in my year (age 11) at high school were gathered together and given a talk about sanitary protection, where free samples were handed around, and lots of myths about periods etc were dispelled; very necessary because of the rubbish that a lot of girls were told by their parents, and for those who weren't told anything at all.
My dd's sanpro is completely and entirely up to her. I bought her both, went through the mechanics of using them, and have left the matter in her hands because it is, after all her body.
This is not YOUR decision to make for her, it is hers and it may be a good idea to let her make it without any inference as to your preference for her.