i think Vince has been setting her up “being worse than Jimmy” and “going to fall hard” for awhile. I think the idea of her possible death or leaving Jimmy is more of a misdirection. I think she will either end up in jail because Jimmy has to turn on her because she is too morally bankrupt or he leaves her because she crosses a line that he couldn’t. I think her personal war with Howard is her downfall.But she's already shown that she has a goofy side. No need to keep on going down that road.