Well, here is my theory. The vigilante could be more than one people. An identity that also Conner used. Probably they are all ex soldiers. Or it could be that the vigilante is a friend of Conner, an ex military, and Conner is informed by, and informs, him about Jessica's activity so she does not get in dangerous situations. I have the strong feeling Conner is involved, in a way or another.
Not just the pose and camera position is great. Very few developers are able to render the water drops like this. Or the way her hair, being partially wet, naturally sits on her body. the same happens to her earrings and the bracelets. In the other games (even the most famous ones) you'll see hair always defying gravity like it's made of metal. Stoper looks at all those details, and he has no better hardware than DrPinkCake, to name the most successful developer.