While I get what you're saying (and agree slightly, it would be far better if the little one was removed from the situation entirely but that can't happen since the little one's are the ones that the 'homos' are targeting) it's far more likely to be "There's the girl who's parents won't let her read homo books"
Someone pointed out in an earlier post (you?) that kids instinctively find homosexuality naturally disgusting. If this is true (and I think it is), then I seriously doubt the playground reaction is going to be pro-homo as you suggest. It is far more likely that she would be "the girl who got in trouble for reading homo books."
I would be willing to wager that this specific little girl has been subjected to some playground taunts such as "Homo lover...homo lover...homo lover!"
I do know that I personally would never use my own children in the manner in which these parents are. If my daughter came home with such a book, I would do as parents have always done, I would have a quiet and private talk with her about these particular "facts of life."