Apparently you were caught all the way back in Shiganshina. When Pieck burst through to save Reiner, you had shoved Hange out of the way. They hadn’t even realized you were in Pieck’s mouth with Reiner until they made it back to the Marleyan port. They had immediately decided to kill you.

Until Zeke suggested having an “Island Devil” under their supervision would prove useful. Now here Reiner was, waiting outside of your cell for you to wake up, knowing your life will never be the same.

A small part of Reiner thought it was cruel. But for him to already be under inquiry for being the only one of four Titan shifters to return to Marley after nine years without bringing back the Founder? With two of those Shifters now in the hands of the enemy? He was lucky enough that they didn't feed him to another Warrior as soon as he returned. Now, he needed to do anything he could to protect himself and his family now that he is home, to prove he is still one of the good Eldians.

What they'll do to you, now a prisoner of war, he doesn't know. He tries to push any inkling of a relationship you two had back on Paradis out of his mind. You are an Island Devil.

You will soon find out that there are people outside the walls, who live comfortably without the threat of titans. That you are now a prisoner in a country where you are the enemy, that the people outside the walls despise your kind, much like they do Reiner. Although you hadn’t died in Shiganshina, you'll wish you had.