@Bellatrix ok :) well based on that, I think you would like Underworld 5, if you shift your focus from Selene to Semira. Semira meets all your checkboxes and I think she's fantastically fun to watch. Selene is more complicated, in that she's a mother but doesn't want to be and doesn't even spend time with her child.
Selene is consistently portrayed as the hero of the series, but if you stop and think about her actions, she alternates between being yet another villain and just messing things up. The films try to portray her as flawless but she has serious issues. The whole series is basically just villains fighting other villains, like I think I mentioned the other day.
that, and Selene spends a lot of time reacting to other people's actions and just trying not to die
also, I turned into a Lara Pulver fan because of Semira, if that tells you anything
I tend to think that you wouldn't like Underworld 4 because of its stronger motherhood theme, but the squirrel you'd like it, so I don't know. Underworld 3 is just right out, because it focuses around a proud mother for pretty much the whole film. 1 and 2 have no motherhood themes at all.