I was not allowed to see my first grandchild until she was somewhere between 4 and 5. It was because of a program that was going around about kids leaving their parents totally because..... something something bullshit. It was a program you could read about and hear the info on the net, it sickened me but it took a lot of therapy on my end to get through it. I did then they did. It is all good now but I cannot say how it felt having people send me her pictures when I had no idea what she looked like and they did not know about it. SO much more but find help, this is different but sounds like one of those kinds of "programs" . Get help soon if you think it is going bad.
My son came around, will not talk about it. I did find out from some of his friends who it was who pushed him into it and why he actually let it in. It was a mess but everything now is as it should be.
I would not say too much to them, please get help and see if you can stop it before it gets worth.
*******Much of this may be totally different but please just know, she sounds the type and you need to know how to dance around it before it becomes you who she goes for. IT CAN BE FIXED