the goddess of "messiness"

That's the nickname I gave to my sister Helen. She's always so messy that you really have to "observe before you act", it will be really painful if you don't. Her toys and dolls are always lying on the ground, waiting to be smashed. I saw her once eating candy and she just threw the wrapper on the table. I was mad at her because I was the one who's supposed to clean up. If you open her backpack, there's pencils, wrappers, and her lunch from two days ago. Sometimes her messiness is a real problem. Like the time when she couldn't find the remote control, I thought it was hilarious. In conclusion, my sister deserves the nickname of "the goddess of messiness".