After her previous incident with her boyfriend's serums, Becca's found herself incredibly fat, and so weak that this small amount of weight is enough to get her tired. This is Kalus' punishment for abusing his concoctions. She's in the process of getting her old body back the old fashioned way. And threatening to give her another dose of spiked serum if she slows down. He should be careful. Once she's her old self again, Becca might deliver a bit of payback.

Kalus and art is to  cmpunk
Becca is to me.