http://www.mangago.zone/read-manga/nemureru_hana/mf/v01/c005/28/ After I read this page, ...

I actually thought that he would when I read that.
Somehow, I like it when the person who got hurt dies, so the other person can feel the pain of regret forever!!

...but that's just me.

No, a woman like her wouldn't feel guilty. She blamed the kid for being sexually abused - not the adult. She made a scene at his work place knowing he would take the full blame and not mention that she was cheating on him. She put revenge porn/child pornography on his door. She knew, what she was doing and I think, she was trying to push him over the edge to make him kill himself.

Spot on analysis of her personality. However, I think his suicide would have caused a selfish, gold-digging, vain person like her an awful lot of grief. Having your husband commit suicide right before, or right after, your wedding would leave quite the black spot on her reputation, not that she doesn't deserve one. Also, she needed to keep him around to keep the money flowing freely. After a suicide, assets of the victim are usually frozen to prevent people from committing homicide and making it look like suicide. I doubt she would want to wait months or years to get her hands on his money if he killed himself. She'd also have to pay for his funeral because life insurance doesn't pay out to suicide. She couldn't get away with going cheap either, everyone knew he had money. She would gain another black spot for being stingy, or have to pay out to have, at least, a modest funeral. Neither of which seems like something that would please her. That said, she is a psycho and you may be right. None of this may really matter to her as long as she could punish him. Though, if punishment is the goal, wouldn't death be a bit too easy?