My father with dementia moved into my home 6 months ago as he is incapable of living on his own. He is verbally abusive to my wife who consistently and lovingly services his needs in any way she can. Despite my consistent pleas to treat my wife with respect, he continues to demean her (mostly when I am not around) and has made her feel unwelcome in her own home. Dad has the means to live in assisted living, and I’m considering asking him to leave my home. I feel like an unfit husband and son. Is there any way I can change my father’s abusive behavior?