POLK.
No, she's not. She may as well be, but she isn't. She's power hungry and doesn't give a damn what she has to do to get it.
Apparently Umbridge knows if that line about meeting her parents wasn't bullshit, which it may have been.
Sidenote: I DM'd the @deatheaters information to the Order hooter account for w/e you want to do with it. I don't know who runs it, but it's legit information and it was actually from me.