The more I think about it, the more it seems like having her be turned during the battle would be the best way to stitch everything together. That way, when she wakes up they would already be in hiding, so it could give them enough of a respite from the Wynters for Vail to start walking Victoria through what her life will be like as a vampire. She'd have to learn how to hunt and control herself because she'll have new bloodlust that she wouldn't be used to. Fledglings are more prone to frenzies and also wouldn't be used to having heightened senses, so I imagine being turned into a vampire would be overwhelming for her at first.

We could have a short part of the story focusing a little more on her with some parts thrown in about what's happening with the Hygrace clan and the Order and also news about what's become of England since they all left and the Wynters assumed power.