Woman on an island, day 34

I spend a miserable and hungry night up top of the tree. I look down to the ground...it seems like the beast left sometime before dawn, I will just have to be very careful when I'm working down there. I go down the lift and I start working with all haste to finish my house. The walls need to be up today so I can get the roof sorted by Sunday at the latest. I'm going to need some sort of early warning system but what....ah! Cans! I am going to make a perimeter alarm! That should give me enough time to get up the tree before the monster gets me! I grab my spear and I  head off with all haste back to the old camp to fetch as many cans as I can! And my food situation will also improve in doing so! You messed with the wrong chick!