Now that's what I call an ignorant hater. I can clearly tell you ship Levi & Eren (I do too) but you should leave your ship outside of the official manga/story and maybe learn to understand and appreciate every single character. I actually like Gabbi, she's an interesting character and an aspiring strong female soldier, with a strong will to defend her friends and country. She is exactly like Eren when he was small. If you keep up with that attittude you'll never learn how to fully enjoy a book/manga, and with what you're doinf right now, you're only disrespecting the mangaka and the effort he put in each character.
Ps: there are other important and interesting characters beside Levi and Eren.
Isayama you kept killing everyone but now you can't kill that bitch, can you?! Just when we need someone dead you hold back? If that bitch survives and shoots Eren or Levi somehow, I swear I'll go nuts and never accept the manga as canon ever again.
That's a big if but IF she tries to shoot Eren but our perfect Levi Heichou gets between them and gets shot, I'll become fictional and kill that bitch with my bare fictional hands! Also if she manages to shoot Eren, I won't hesitate bitch!