does your wife and mom hate each other ?

My wife always says that i put my mom before my family. I moved my mom and sister in with us almost 2 years ago . i didnt talk to my wife about it i just moved them in. my mom has skitzophrenia my sister is 14. my wife is currently tryin to get my mom admitted into a mental hospital. i dont want my mom in a mental hospital i dont know how i can talk to my wife without her getting mad. i already told her if she puts my mother in one that i would leave her and she said "ohwell" she said she has too much resposnsibilities raising our 2 kids and my sister and careing for my mom. but i think the is just holding a grudge against my mom for saying i couldnt marry her because she is white (im black).