Hey,
maybe there is a bug ? At chapter 6 "One way or another it ends tonight" and "I'll keep Tara safe" leads to the exact same conclusion it seems (and it seems that the text "one way or another it's ends tonight" is the one triggered).
A fantasy yuri visual novel about a love between two girls that transcends life and death. · By
Oh I might just be able to drop the save file from where the choice is glitching if you want to debug it.
https://drop.chapril.org/download/9f256ce5d52defd6/#bvYZhn6nYZ_5-bkPftNjKQ
...Also I downloaded the game yesterday, should be the latest. I hope it helps !