Clearly the burning wasn't working well enough, and he was moving towards her fast. She could either move out of the way or push him out of the way with something solid, burning and extraordinarily painful. Her whip immediately dropped and she formed a spiked hammer out of pyroplasm with a formidably long haft. When he was within range, and it didn't take long, she swung it low against the ground where he was.

She concentrated, trying to make it as solid as possible. When it finally swung against him, it would've been hot enough to melt metal with a touch, but solid as metal itself, swung by a girl with superhuman physical strength, a huge adrenaline rush and just a tiny touch of desperation.