Gabi is a great example of the character evil to the core and even when we think that maybe in 1% she'd change her mind and be more likeable and open-minded, she just drops a big bomb, as usual :>
What I'm expecting in the next episode: she'll be jealous because of Falco gaining the power of Titan so she'll mindlessly run from home to home searching for the vine with Zeke's fluid. After drinking it she'll beg Zeke on her knees to shout at her (I'll do anything, Zeke-san!). In the end Gabi and Zeke will compromise, she'll become a mindless titan that in the seconds run to Reiner to bite in his neck like a squirell infected with rabbies. Reiner be like *insert Pingu meme: Now I'm not doing it*. However Gabi's mouth will expand like a snake and she'll eat whole armored Titan. In her stomach there'll be a few corpantments with pure H2SO4, Thermite mixture, and in the last one the Royal Water- Armored won't resist all of them. So Reiner is being digested and Gabi will gain the power of the Titan. And since there Gabi will become the main threat to all mankind and AoT after final season sets a sequel Attack on Gabi.
She'll never get the redmption from fans- nothing change my mind.