User blog comment:Miskos3/Spring 2017 - FT Wiki in Anime/@comment-4449950-20170618000706/@comment-7418318-20170618142445

"they're seeing you help them Ymir and if you help save Eren they're probably going to be happy and think you're on their side why are you convinced you need to be on team Armoured and Colossal?"

Ymir wasn't afraid of being put in chains or anything like that. She believed that the invaders would eventually be victorious and anyone inside the walls would be doomed. So she wanted to get herself and her sweetheart out of the firing line and build some goodwill with the suposed future victors.

Though I agree that they really messed up presenting Ymir's motivation, since it only makes some sense in hindsight once she sees Eren use the coordinate powers and starts to think "maybe the people inside the walls aren't doomed after all" or somesuch in yesterday's episode.

A problem that I have with the S2 of SnK is how they try to make even non-dramatic things into a supposedly dramatic cliff-hanger. Take for example the reveal of who the churche is keeping an eye on.

They gave a description that could only fit Christa, but right before the name was said, they cut away and then within the same episode this "mystery" was then revealed. Between Historia already confessing her true name to Ymir the previous episode and her being the only person in the freakin entire anime to fit this description there was absolutely no ambiguity about who was meant, so why make it a mini-cliffhanger?