Wait for her to attack.

It seems like she's getting flustered, so you decide to see if you can get in her head. She comes at you throwing punches; you dance out of her reach. She offers to lock up; You fake a punch and slide away from her. Helene chases you around the ring, getting madder and madder as you refuse to engage her. This probably isn't winning you many fans, but it's sure pissing her off. Eventually she's bound to make a mistake. There it is - she throws a huge knockout uppercut that misses by half a mile, leaving herself open.