nah, she could just return just before she would get blackmailed and prevent it
but for a cheating manga it would be rather wild
if it was a netori I dont see any limits to what can happen
Wisdom in my country dictates you shouldn't tell each other everything and anything because everything can just end with a divorce, specifically it dictates you shouldn't talk about financials or business endeavours with each other, on almost every other matter it's an open book. I think it makes sense in a lot of ways so I'm leaving it here as food for thought