She is squirming around constantly.

Staring at the ceiling half the time.

Her voice is shakey.

Rubbing her hands together.

Can't keep her hands still. At one point early on she is literally pulling on her hair as she looks in the camera to advertise her onlyfans porn.

Later on she has her hair in front of her as she nervously plays with it.

Jerky head movements.

When she tried to actually talk and give more than a one-word or few word answer, she struggled to articulate what she wanted, and ended up not articulating it.

The random burst of laughter after talking about something difficult that seems more like a nervous tick.

Overall she seems like she is playing a character she is not comfortable with.