Vela grits her teeth and stays still... Obviously it could smell her, but as alien as it was to her, so she was to it. It couldn't decide if she was edible...or even what precisely she was. As long as it wasn't opening its mouth to try a bite...
And if it did?
She'd have to play that by ear. Maybe she could leap onto its back, if it didn't get her clamped in its teeth. From there, she could try to hack through its spine.
Or, if the others did manage to distract it, she might make a break for the trees...
Ugh. Nothing but bad choices all around.