Oh!  I was saying I don't think you necessarily need to roll for that!  Although..  Here, let me give you a choice!<br/><br/><br/>-You throw the blade and she catches it.  Adventurers can just do these kinds of things.<br/>-You can roll +Bonds to Aid her attack (http://www.dungeonworldsrd.com/moves#TOC-Aid-or-Interfere) rolling 2d6+Bond (which in this case, yes! it's a +2 which is pretty beast!).  If you get a 7+, you'll give her a +1 on her next attack AND she'll have her weapon, but you'll expose yourself to danger, retribution, or cost (see: bugbears).  If it's a 10+, she'll have the weapon and the +1 on her next attack AND you'll do it safely!<br/><br/><br/>So, do you want to take a risk to give her a nifty +1 or do a safer maneuver?