If it's really depression, nothing you can do will change it. She is giving "cause" to her feelings because she cannot r Olson terms y other way. But even if you moved closer or if traveling wasn't a problem, there would be something else. And when you can't blame external things you start to look inwards and find fault there ("I'm a bad mother/wife /person").
Her depression could be Affecting her lack of drive to "get a life" or have a meaningful relationship with your dad. She needs help
