[Suzerain of Sheol]

I'm not sure I'd really call it hope when she gives A2 the sword.
With the way things are going at that point, it seems like everything's coming to an end. I think she's analytical enough to realize how unlikely it is that anything good would come of it, but it's a very human gesture, either way.

Yesterday I came across the tie-in short story Memory Cage that shows 2B's first time killing 9S, you should look that up if you haven't yet.