You know, all that is wrong with Penny and Aggie can be summed up in this sentence:
They named a character THARQA.
"Tharqa" isn't the name of human teen female. It's a species from Star Trek. It's a noise you make when you're clearing your throat. It's a bunch of random letters strung together. But it does not, in any way, resemble an actual name.
(Okay, I fully expect people to start telling me about all the Tharqas they have known and loved. I'ma tell you right now, I don't believe you. "Tharqa" is NOT a real name. You're going to have to scan in birth certificates as proof.)
Jinx says: "she's not a human though. She's fat! So she gets a weird name to show her otherwordliness, that sounds like the name of a troll."
Word. Why didn't T Campbell just call her "Belligerent Bertha" and be done with it?