My (34m) wife (31f) has changed significantly after my mom passed away (66f)

So my wife and I have been together for almost 10 years, we?ve been married for 5 years. Since I?ve started dating her, I?ve lost all 4 of my grandparents, and both my parents. My mom passed away this year from stage 4 colon cancer. She was a life long nurse and always took care of herself physically so it was was quite a shock to all of us. I was very close to her, and talked to her everyday./u/ Two days after my mom died, my younger sister attempted suicide , my older sister found her just in time to call 911 and they saved her. After she was released from the hospital, she spent a few weeks In an inpatient mental health clinic. After that she came to live with my wife and I. We have a 4br 2ba house, so it made the most sense for her to move in with us Vs. my siblings. My sister also has disabilities and has never worked or had her drivers license. Since my mom has passed, my wife has been a completely different person towards me. She attacks me over every little thing. I work a very physical job, and when I come home I often make dinner and clean up. I don?t mind doing that, but then when I get berated for every little thing, it devastates me. She has told told me that she resents me for my mom passing.
I don?t know what to do, I understand that my wife never signed up to have my sister live with us, but at the same time I can?t kick my disabled sister out on the street. Up until my mom passed away, we had a great relationship and were best friends. I?m at my wits end. Any suggestions would be greatly appreciated. I?ve suggested counseling multiple times, and she isn?t willing to go. How should I proceed?
Tl;dr my mom passed away this year and my wife has not been supportive at all.


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