Unfortunately, your effort is futile, Purity. When Jennifer enters Angelic form, she'll immediately find out something's wrong when the bow doesn't transform with her. When she transforms, the bow in your box will transform and lengthen, but the box doesn't; the result will be the bow becoming too long for the box to contain, thus the box is punctured. You did not mention the box being that particularly hard. Then, immediately, Jennifer will sense where her real weapon is, and retrieve it. I see no reasons for Sanctus to keep it, since he can't use that bow anyways because it has no string.
I am merely stating what I'm going to write. This is to help me focus my thoughts.
Although, I dearly hope that you will stop this. This is a game of competition, but I would try to create situations in which people can utilize their writing skills with maximum efficiency. What you were doing is attempting to create situations where people cannot utilize their skills in maximum efficiency; to be frank, I consider that underhanded. But rest assured that no matter what you do to me, I will not deny your character of his basic rights.