Wife with 2 children at in-laws home from last 5 months, not coming home

Dear all experts, This is my situation, please advise what I can do here. Marriage: April, 2007 From my side: I am not clear on what to do whether to file for divorce or go with a legal way to bring her back. Since last May, My wife has been at her father’s home (in the same city) and is unwilling to return. The quarrels at my home started when my father and mother started living with me. The reason behind this is not clear. She keeps changing the reason and trying to avoid coming back. She does not have a brother and last June, her Mother expired. My father-in-law is alone now, and I think she is not willing to leave his father and want to take care of him. At my place the situation is. I am living with my aged Father and Mother. My mother is not in a situation to handle the household things. I and my father both are her helping hands. At this stage, I do not have a clear intention of what she will do. Whether she is filing any legal case for maintenance? Or will file for divorce? Considering this situation on both sides, what are the best possible approaches to tackle this? Thanks in advance.