Sister suffering mentaly. No of doctr!

My sister age is 32 year she is married and having a kid of 6 year. We belongs from Uttarakhand where people typically belives in devi devta and pooja. Everything was fine when she get married and life was normal. But the problem starts When I get married after few year of her marriage in year 2017 in  the day of my marriage she cry heavily and she told that our mother soul has came into her and she is blessing me. our mother had passed away in year 2011 this generally happens in  uttarakhand people strongy believe that their grand parents just cames that time in form of soul. After some days her father in law get paralise from a heavy hart attack. Now here the actual story starts uttarakhand people try to find deases solution from pujari/Purohit/pandit generally  they use to take rice as a input and they output some solution like do this pooja and all. now she is mentally disturbed she can't care of her own baby can't cook food. she started crying heavily we already visted no of doctr