What does all that have to do with you getting your need to see the dog met? Sound like you're holding on to a lot of resentment.
I get that you're angry and you're hurt and you're interpreting everything she's doing through that lens.
But you're here because you want to save your M. She's isn't here to save the M. You can only control you. You can only change you.
Maybe with you gone, she and the dog have formed an attachment. It happened with me and our family dog when H left. The amount of companionship I got from him surprised even me. He died just one year ago and I still miss him.
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss