Yeah, I have just checked it out & this version is great
It's a big level, player don't know exactly in which direction to go so he needs to explore, he can get into dead-ends & needs to go back so it's not boring. Also in two situations when I've fallen down I almost felt fear since I didn't know what is beneath me & if I can go back again

Once geometry is created & all lights set I believe this will be a very good level.

I didn't see bonus items in this version. I believe we shouldn't hurry with them but you did have a good idea. I've giving it some thought & this could be a very practical thing. It could make player explore the level more & bonus items can be almost anything: herbs that enhance health, or some sort of potion essentials the sister must gather or maybe vegetation that can replace meals & influence sister's stamina...