I graduated with degrees in both theatre, and interpersonal communications. There is NO reason for Sabine to be facing in right now. Not at all. This scene we see from multiple angles, and multiple shots, which means it was a conscious decision for Sabine to take a few steps closer, and to turn her body towards Shin.
Sabine has been captured before—we see it in Rebels, when she’s captured by the Seventh Sister. In that instance, she defiantly turned away from her, and was in much more danger than she is with Shin right now (considering Baylan promised not to hurt her).
Whether or not shin/sabine becomes canon, it was a conscious acting, and directing decision to have her loosen up after a moment, move closer to, and turn towards Shin. Shin is only holding one of her wrists. It wouldn’t be uncomfortable for Sabine to keep facing forward, but instead she turns, and basically half loops her arm behind hers. Quite literally, this is how I turn and follow my own girlfriend, or how she would follow me. In fact, my first thought was how strikingly similar this positioning is to my own, actual, sapphic relationship.
No matter what becomes of them, the foundation is there, and it’s very, very telling in their body language—and I can say without a doubt, that was done intentionally.
So what we’re saying is, I was right.