Struggling with mental health is no joke and no small task to get well and maintain your health. If Ron can look at this wife of all people, claim her actions to be tied to mental illness, yet have so little compassion, he truly is the hellbeast I first saw him to be. I do not mean to imply that mental illness is a blanket excuse for any and all actions, it certainly is a mitigating factor in our day to day actions, choices, behaviors, and interactions and clearly Ron has conceded this, he has pointed to her alleged mental illness(es) as the root of her actions driving him to send her away and refuse any consideration of reconciling.
I have no tolerance for people who lack all empathy or attempts to empathize with those suffering from mental illness (if in fact, she is, which I have no doubts she is facing numerous affects of his abusive behaviors, how deeply those stem and to what extent they are affecting her actions and what actions she's actually taken, we can't really know but damn him all to hell and back for being so callous (((as an aside, I don't believe in God, heaven, hell, Satan, etc, so I am coining a phrase))).
I applaud people who have faced mental illness and do what they need to in order to live healthy, functional lives (as much as is in their power to do so) and I weep for people who long for healing, who long to feel 'normal' and yet don't, CAN'T-- CAN'T so much to the point they wish they didn't exist. That level of mental illness is no sign of selfishness or weakness but I don't expect a self-ingratiated hellbeast like Ron to even begin to understand that.