I'm thinking that Scratch is protecting her because she wants a bargaining chip, Bricks because he seems to be the only one with a conscience and doesn't want to see a pregnant woman hurt. He even started to call her Elizabeth before she told him to call her Lizzy. Scratch probably doesn't care about Lizzy because she's a good person, only because she wants something to have in her quiver should she need to bargain with anyone from the tower should they see each other again. The only person she's ever shown to respect or care about was Durai and even then she's gone against his orders once before.