Harry Potter theory

Yes, I’m reading the Harry Potter book. It is okay. I’m not inhaling it, like I would with another author
I’m only up to chapter 21. But I do have a theory about one of the characters.

SMALL SPOILER FOR PEOPLE WHO HAVEN’T FINISHED CHAPTER 13

Umbridge: She is in charge of prosecuting mudbloods. She has a locket to demonstrate her heritage as a pure-blood. But we know the locket isn’t related to her at all, and was gotten from a “petty criminal”. I think she is actually a mud-blood and is desperate to cover it up.
Maybe I’ll find out by the end of the book. If I don’t, there isn’t another one later to reveal it.