Board Thread:Speculation House/@comment-27404492-20170417075739/@comment-28522425-20170418023129

I just rewatched the scene, and Ilia didn't have the Scroll on her hand until after Sun appeared in the roof with her and Blake.

Maybe she was going to "accidentally" drop it, or wanted Blake to see it so she would think that she was going to call reinforcements, or so she would think that she had pictures of them in it, so Blake would kick it away.

After that, it was just a matter of making it look like that wasn't part of the plan, by "trying" to recover the Scroll.