look at her right leg as she is being put into the van something appears to fall out of her pant leg and you hear the clink... I too don't see cuffs on legs or hands. but she is not passing out she is being forced.

Watching it again several times; I see a silver object bounce off the ground and, at an upward trajectory, hit her pant leg, coinciding with the metallic clinks. It sounds like spring steel (like a clip off a phone holder or some sort of belt clip). With multiple people lifting and pushing hard against each other its quite possible someone's tool was dislodged or ripped free. (And these are the types of people who carry numerous tools quietly.) It appears to bounce behind the bollard and out of sight. No one tries to retrieve it during the video.

Her toes are dragging. She's heavy. She doesn't seem to be effectively helping nor resisting; merely conscious.