Don't call an attorney, instead call your FDX retirement negotiators. They are "the best of the best of the best" just look at how well they have done negotiating in the past.
Maybe you will come away with owing her everything and living off of Social Security, oh never mind they would negotiate that away for privilege to see your dog that she also took.
In all seriousness I'm sorry to hear it, I have seen it happen to many times and it isn't easy or pretty.