Something we taught our 5 year old is that whatever lies under our underwear is not to be touched unless it's by mommy, daddy, or the doctor. And if anyone touches him other than those people, he needs to tell us right away. As far as your daughter, just tell her that what lies under her underwear is just for her and what lies under other people's underwear area is just for them because she's not their mommy, daddy, or doctor. As far as kissing boys, just give her another way to show affection towards them. Tell her that instead of kissing them, to ask if she can give them a "high 5" or even a hug. My son has social issues (he's mildly autistic) and these techniques have helped him a lot. Hope it works for you too!!