Care taker

Myself 45 yrs old man (Hindu) originally from Karnataka, settled in Latur, but currently living in Silvassa. I was married in 2001 in Latur. My wife left her matrimonial home in September 2015 on her own will. We have a son who is 15 yrs old and stays with me by order of dist court,Silvassa under child custody. After inconclusive contesting over DVA U/125 cases for 1 year, I ultimately filed appeal against lower court order in dist. Court & is under process. I’m ready to stay with her but she is not ready to reside with us. Staying alone in Silvassa by doing Beauty parlor & Tailoring works. Already court instructed me for not to disturb her in her doing business. Order is as : If she reside with you , Pay maintenance as Rs.5000/- & If you are not ready to allow her to reside with me then give alternate accommodation or Rs. 5000/- I’m in trouble that 2 Years over & she is neither residing with us nor ready for divorce. In such case can I bring home my relatives as cousin sister (27 Yrs old) for child care? Can she stay with us as care taker of child ? We have no idea till when she would keep us harassing this way. I am suffering from severe depression & immense mental agony resulting out of this. My queries are as follows - 1. Can she stay with us as care taker of child ? 2. Can my wife take any legal actions against me if she comes to know about my cousin sister ? 3. What legal precautions I should take to save myself from any likely legal harassment from my wife ?