What do you do when you think you are bad for someone but they still love you and want you?

My wife is a basket case. She has lost her business because of COVID. She has been locked in the house since March because of COVID. She is OBVIOUSLY wildly depressed. She is having physical pain with no explanations, headaches, pins and needles to the point she cannot be touched. Sometimes the headaches last days - sometimes they only start when I am coming home at night. I have never hit her. I have never called her names. I can count on one hand the times I have yelled at her in 25 years but she cries now. She told me she isunder s lot of stress, that I give her a lot of stress and that she would rather I just hit her instead. Then she cried. This happened while we wee putting together the kitchen table. Then she thought I was going to be angry with her days later over something small and she started to cry. I dont think I am a shit husband but it appears that I have broken her. Should I leave for her own good? I dont know what to do - she says she loves me, trusts me, and wants to be with me forever but it doesnt seem like I make her happy anymore....at all.