While watching this scene, I was thinking about if the choking was really necessary or if they could have gotten the emotional turmoil / betrayal across some other way. It didn't fit that well with how they had interacted with each other up until that point

But later on in the episode, it looks like she again feels choked, but this time by the collar of her uniform. So if the intent was to set up that symbolism, I guess there is a reason for the scene in the post