Who would have thought that those puny little stick arms actually had some muscle in them? She does get a few shots in as the t-rex topples over, just punching at it as the force of her tackle follows through. Before she ends up pinned by those arms.

"Hey! Legg-- oomph!" The dinosaur's bulk is a pretty considerable one to find herself smushed under when they hit the ground and punching isn't really an option any longer. So, she tries a new method of attack. One taken right out of her opponent's book as a matter of fact.

... She bites the stupid thing. As hard as she can.