Waited for her to be fully distracted

You waited for her to be fully distracted, patiently as the smelly fumes began to fill the air around you. It was becoming very difficult to hold your breath in or keep it together. One could only take so much ambient smelly wyvern farts until they fainted...

"And take that! Hnnngh...You stupid...I'm gonna squash you under my butt forever!" She screamed loudly enraged, smashing her tail against the ground furiously. She began to turn around, and your opprotunity seemed as if it was in sight! But she was still moving around so much, you couldn't tell if you had the perfect chance to strike her down yet. Or if you just needed to wait a little bit longer before delivering that finishing blow attack on her.

Would you wait a little bit longer? Or you would run in to defeat her, preforming a leaping slash attack at her side?