>>713179895It's a lie of omission, all she ever says is that she has a late period, and she let's Vincent fill in the rest
She's honestly justified, since even the notion of a baby completely exposed how unwilling Vincent was to commit to Katherine and how severely flawed their relationship was. Even if you could say it was underhanded, it was the kind of kick in the ass Vincent needed to pick a lane and decide if he was in or out