Hi Bacolod,
This sounds a distressing story.
I think both of you must have a heart-to-heart talk to find out what the problem(s) is.
She may be depressed if she wants to stay in a lot, or maybe continually homesick.
You say there are family members there, I am presuming they are your family, not hers?
She may need to see the doctor if she is clinically depressed.
Best of luck.