Hi Joseph,
Sometimes we try to go back to the past, to somehow (by magic? energy?) make the present better.
By going to the place Where It All Began, will either close the loop, OR her father will have to visit at least her sister there. Where he will see the mother. Then the nostalgia will creep in.
I don’t know if you’ll come back and read this, but that is what I think is going on.
Just support her. It’s tough, no matter how old you are.
Best,
Inky