Now reached the end, I agree with iceninexp, the moth catching was a bit tedious, because you literally have to go through the whole body again, but, it was still interesting enough to see it through to the end.
I've got the feeling you guys are really on to something and if you could polish this even more and extend it even further, going through all parts of the body, performing all kinds of tasks, linked to things happening in the life of Tilda, you could make an awesome full-sized game.
Go for it! :-)