As far as I know being a a sexual predator is not hereditary (at least compared to something like ADHD). It is usually a learned condition. Since she has never met grandpa, there is no way that she could have been influenced by him.
Does she have problems with other playmates or only her close relatives?
only close relatives. we have done the good touching vs bad touching talk, try not to make a big deal out of it so maybe she will forget. she seems to understand the inappropriate touching talk but then a few months down the road she will do it again. we just want to help her and understand whats going on
Is she the oldest? Any chance one of the other kids is kind of behind this?
And the problem with changing behavior is that to really change it, you must constantly work at it. Kind of tough to do when it doesn't happen that often.
One thing worth trying are books aimed at this age group which you can read to them at night and repeat every week or so. One example would be - NO Trespassing - This Is MY Body! If you go to this link you will find several more books on the same subject aimed at this age group when you scroll down the page. Typically, books like these can be very helpful. The link is - http://www.amazon.com/NO-Trespassing-This-Is-Body/dp/0984747206/ref=pd_sim_14_5?ie=UTF8&dpID=51BGp8%2BDpzL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=00NTZ8VB821S7HF8VHPB
wow, thats a long link. If it doesn't work just go to Amazon and search for the title.
Hope this helps.
I'm not sure if you've tried this or not, but explaining to her that it makes the other kids sad or upset when she does it, might help. She might keep doing it because she thinks they like it? Therefore it can't be the "bad touching" you're talking about? Also, have the kids themselves tell her "NO" or "you are not allowed to touch me here -->" and point or something. When my step son had a hitting problem, EACH kid in his class told him, one by one "I don't like it when you hit me, you're not to do that ever again" to his face, and before that, all the talking with him and disciplining in the world wouldn't get him to stop! But after his peers told him "no more" he stopped. Also, please ask her if anyone (grown up or kid) has touched her inappropriately. I'd hate to think it, but it's possible she's been introduced to that kind of thing be someone else.