My kids and Pokemon Go.

So my 3 kids have downloaded Pokemon go and have been playing it for a few days now, at first i was happy they were out of their rooms and out of the house getting vitamin D and oxygen and what not, but now I'm slightly concerned, my neighborhood is a fairly safe place (if anyone can really say "safe" in this day and age) but anywhere can have problems.
After my 13 year old daughter and her friend returned after chasing some digital dust around the neighborhood, she seemed a bit off, so i asked her what what wrong, she said that a group of kids were out playing by them and came over to them to chat about the game, however one boy about 16 was very nasty to her, talking about her boobs and butt and asking if she had had sex yet, this really upset her and she has decided not to go back out, even with a friend. and i don't blame her, even though i wanted to crush this kids skull in, he didn't touch her or hurt her he just made her uncomfortable, I'm glad she wont be out now because with all the benefits of the game, health, social and whatnot there are some scary truths, a lot of these "kids" and adults that are running around probably don't have the best social skills or are in a way shut-ins or recluse type people, this game brought them out from the shadows and good or bad are changing the landscape of social interaction.