because it is a plot point to drive the last arc, as it usually is in these tales until some freaks try to use fiction to justify it's actions in reality
Throwing random amounts of money at the problem is really the worst way to handle this situation, it just makes their relationship seem even shallower. And then going "i'm going to kill them", horrible move.
But y'know what? I support women's wrongs!!! 🏳️🌈🏳️🌈🏳️🌈