#queue are so busted

The girls met in sixth grade (so the year after canon), where Victoria used her talent (and hypnosis) to win over Jennifer's former best friend, popular seventh grader Asha Mazin, taking credit for Jennifer's own good deeds as a friend. But Asha was better at making friends and getting positive attention, so Victoria pulled strings to get Asha to transfer out of school, giving Victoria a boost in the popularity polls. This also meant, however, that Jennifer was now drawn to Victoria, something Victoria was happy to exploit. And Jennifer is hard-of-hearing in her left ear, which makes her less susceptible to sound-based hypnosis. Meaning Victoria had to social climb instead of using her recorder. Luckily, Jennifer is a skilled people-watcher, and helped show Victoria the ropes of the school in exchange for her friendship.

Disaster struck one day when Jennifer got a hold of Victoria's recorder, then when Victoria caught her with it, Jennifer panicked and tossed it away, breaking a mirror in the process. The recorder was undamaged, but Victoria cracked under the pressure at the recital and blew a single sour note. Her parents held this against her, and Victoria needed someone to blame -- so she chose Jennifer, decreeing her to be "bad luck" and a "jinx."

Desperate to find her identity as an individual, Jennifer went to the library to study something she liked that her friends never really did: witchcraft. There, she discovered a book of spells, with the most fascinating being a spell that allowed her to control what others say. Jennifer learned this spell, and a few others, and became a supervillain known as "The Jinx."

Jinx spends most of her time messing with Victoria and others at the school, but sometimes branches out to cause mischief at citywide events as well. Her signature spell is a "jinx" spell, where if she speaks in unison with another person, she will have control over anything they say. Originally, Jinx did not have this spell totally polished, resulting in her accidentally speaking through her captured individual rather than only having them speak when she wants them to do so. The spell is only broken when Jinx, or whomever wields her wand, says the captured's name three times. Another trick Jinx can use is trapping people inside broken mirrors. She perfects these spells with time, and eventually can even puppet people's movements. Now that she wields this ability, she's even more particular about trying to figure out the school's social structure so she can predict what people say and do, thus allowing her to take control of them.

As for her and Victoria, well, Victoria realized the benefits of having a witch as a best friend and sort of apologized. Victoria tends to put Jennifer down (to feel better about herself, especially if her parents are currently mad at her) while Jennifer is very possessive and knows just what to say to push Victoria's buttons, but they still bond over their shared interests in music, fashion, gossip, and strange world records. Their friendship is comically on-again-off-again, and twice a month they'll have a blowout over something stupid, bringing out WordGirl to reluctantly intervene. The tragedy is that they'd understand each other deeply if their stupid pride didn't get in the way -- they both desperately live to please other people.

Jinx rides around on an enchanted mop because she couldn't find a stereotypical broom, and her "familiar" is an untamed black cat with a habit of scratching anybody who comes too close.