She shouldn’t be happy with who she is
It would be less egregious if she wasn't also constantly trying to drag the others back down to her level. Chita's is a narrative sinkhole now, if she reverts to the exact same behavior as before where she's groping Anjou and Toyoda and getting upset when they do stuff with their boyfriends that doesn't involve her.
We spent over a dozen chapters just for Chita to effectively end up where she started, with the caveat of "she's now self-aware of her life's trajectory and has accepted it". If that's how it goes and she is fine with the fact the rest of her social circle is moving forward with their own lives and goals, then that's great.
The moment she starts hanging off of Anjou and trying to get under her shirt and asking them to model in bathing suits for her YT channel when they had plans to study or go out with their partners, Chita becomes completely useless to the story. She'll have shown no growth, she'll have had no forward movement in the overall plot of the story, and I honestly don't know what the author's plan was with her, unless her entire point
was for sexual fan service with Anjou because the author wrote themselves into a corner by making Seto allergic to physical intimacy.