"I hadn't thought we were meant to be speedy."

So this is either luck, skill, or an unimpressive wolf. Probably not the third option, though it is certainly unimpressive compared to its kinsmen.

The downside to the model of crossbow he has is that it can only be fired once before it needs to be reloaded. Altaïr ducks back to do so, keeping an eye out for other dangerous creatures, and nods to her. The final kill is hers if she wants it, if the thing doesn't die on its own first.