Look, I said what I said.
While, I'm sorry you struggle with mental illness (sincerely), and I do empathize with kids who go thru this (my father was a serial cheater father, too), I still think Ashley's reaction on tv was disproportionately extreme. Her sister chose not to attend the dinner. And Jacob just politely expressed his disapproval. There are many ways that her disappointment could have been handled.
I did, however, say I would understand Ashley's over-the-top fury more if the cheating had caused the mom to have a mental break down or had caused them to lose their home or something catastrophic (as was apparently the result in your situation). But Ashley's main complaint was that he hasn't been around in the last 4 yrs. Any assertions about cheating, whoring, gallivanting, etc., are just hearsay.