Boys.
At least that's what happened to me when I was 11. All my girl friends ditched me to TALK about boys, all shut up in their houses... so I spent all my time WITH boys playing outside.
The nice thing about guys... is that, well, gosh. So many nice things about them. Probably the nicest way to say it is that they just don't have very many social skills either. They like DOING things. So as an ADHD 11 year old I was climbing trees, playing ball, going on "missions", catching frogs, riding bikes, and getting skinned knees with the boys. Thank heaven for them. They also notice girls usually a few years AFTER girls start noticing them. So there was nothing weird between us until highschool. At which point the girls' hormones had calmed down a little bit.
For a year when I was 10 my dad really forbade me from hanging out with boys all the time (because by 10 we were pretty independant... going to the parks and in the woods on our own, and my dad didn't want me spending that much time with boys). It was a lonely year. I got a cat. By the end of that year when my dad was sick of me being on my own I had actually trained the cat to come when I whistled, follow me as if on a leash, obey commands, and how to open the sliding glass door.
I don't know if my solution my work for your DD, but my dad was more horrified of the idea that I might grow up to be the "cat lady spinster type" than that I might get a few stolen kisses. He shouldn't have worried. Once you're "one of the guys" you could do a strip tease and they still wouldn't notice you're a girl. I was modeling, and they thought it was hilarious. Did I have to wear "makeup"??? Sigh. I'm a GIRL! Girls wear makeup!!! "But you're one of us. WE don't wear makeup. It's just... weird." I had to move away to realize I was actually pretty.