My nieces and nephews mother and father are divorced and she has the kids the ex husband is my other nephew, any way they moved to Kentucky and won't let us see them, all 3 of the kids hate or are scared of their mother and her new boyfriend and they use to come over every weekend, we're really close to the kids, two are my niece and nephew the other is a child that she had with another but then got back together with the ex husband and we got really close to her too, her real dad doesn't care about her and hasn't see her for five years, he's not in the pic at all, she's now six the middle child is eight and oldest is eleven is there any way we could see them or get full custody of them by aunt/uncle or great grandparent? I know it's confusing but we really miss them to the point where we're crying everyday , thanks

Generally, parents are preferred over grandparents, and relatives such as yourself (aunt, I suppose) are even further down the pecking order. Unless the children are being abused, your chances of getting custody are slim-to-none. Sorry.

Just send each one a card for every possible occasion, and don't say anything but 'love.'
That way the mother (probably) won't tear up the cards and yet they will know you are thinking of them.
Let time determine what happens, because you have no rights.