A chapter ago I noted that it was too early to figure if Ange had a truly bad personality. It was possible, but it was also possible that she was just on such poor terms with Jelly that she gets agitated around her.
Well, safe to say we got our answer, she's a crazy narcissist.
I've learned that in most manga, usually what seems to be the most predictable route, tends to be the one the author will most likely use, and only rarely do they try something new.
Examples:
A new character appears in a 2 pair romcom, artists draws them with far more effort than a mob, they appear on the cover art, have a whole chap dedicated to them, and they blushed ONCE when one of the main protags talked to them.
Copium readers: "THE NEW CHARACTER IS NOT A NEW LOVE INTEREST STFU COOMERS GO BACK TO WATCHING HENTAI YOU ACTUAL INCELS!!!!" 😡
Author: "So here is my new character, they are the new love interest, also here is a bonus extra love interest too just cause I feel like it. This a harem now K?"
edit: Removed incorrect use of the term Occam's Razor, thanks to @DLRevan helpful guidance.