Teen Wolf, Season 5

[Hayden is still standing guard over Deucalion, who is still weakened by a wolfsbane IV drip, on Theo's orders while she thinks about her conversation with Liam]

Deucalion:
Starting to question where your loyalties lie? Or maybe you're starting to understand your role?

Hayden:
What role?

Deucalion:
Why would Theo leave you here? Why not leave Josh, or Corey? You're stronger and faster than both. And more fearless.

Hayden:
[sighs] I know why I'm stuck here with you... Because when it comes to Liam, I'm a liability.

Deucalion:
You could leave. You could go off to help them. No one has to know.

Hayden:
[scoffs] Except for you.

Deucalion:
Oh, I'm no friend to Theo. You want to help Liam? Worry less about being a liability, and more about your ability to lie.