2 years ago, I dropped everything to help by daughter (M) whose husband had suddenly left. Two months ago we tragically lost my 15 yr old granddaughter (T) The 11 yr old has handled the loss of her sister in her own way. T's boyfriend of a few months has become closer and closer to M. He is only 16 but his parents have no control. He seems to have become a substitute T for M. He sleeps over, she texts him when he is not here he's left a family holiday to come back to M. I ventured, diplomatically that this was not a healthy relationship, now I am being virtually ignored. We have been through so much and I feel I just want to go home, except I feel I can't leave the 11 yr old. I feel I have not only lost T but M too. Any Help? As you can see it's keeping me up nights