I FOUND IT.

I found it! THE SCALE. I found where my bitch stepmom hid it. Haha, take that, Summer you fucking psychopath!
I found it, I found it, I found it.
And I am 119.3 pounds.
So I was pretty much spot-on in my guess of my weight.
Gotta get lower. Just gotta get lower. Let's hear it for 115 by Halloween, after all :D
She was hiding it behind the couch in the guest room, under the Christmas wrapping paper. HA! Yesss. You guys have no idea how incredibly pleased with myself I am. I found the scale, and you can suck a big one, Summer. *Cackles with glee*