Grandparents and Third Parties: What Should We Do

My youngest son is deployed, he married and last July she had a baby boy. My husband and I knew she was getting really distent with us but it went from bad dream to night mare. We have not been able to communicate with our son because she has got all his passwords and goes in to his pages and replys back to us as though it is him, although we are wise to it because he does not have the spelling and grammer she uses. Last week, after thinking I was going to get a message through to him, she answers back, as him, that he did not like the names on my page and it was dangerouse for her for others to know he's deployed, so I went through and changed the names to "youngest son", "oldest grandson" ect. He phoned my mother this morning and told her he was not going to see his dad or I when he comes home in June because I do not talk about them on my page it is all about my other child and their family.... "?" Everything we have done she turns around to him to make it sound negative to him. Much less the fact that she has threated my husband and I can not see the baby because we whine back to him about everything (on which we didn't, he is overseas). We have not seen the baby since last November, we sent her two gift cards for Christmas to try to include her and the baby for our Christmas gifts. Is their any kind of harrassment or grandparent rights we can involk here? :wallbang:Yes, this is what I feel like...