You were adopted by the Pines family since you were a baby which made you think you are biologically part of it, something they didn't know is that you were Bill Cipher's lost child, the one they are still searching for since you are actually the Queen/Second King of their dimension, so you are important, even if you had a human form, because of being his child you had special abilities, many that not even Ford has known you had

Right now, you are just in your room, doing your own business