"Poor little baby... destroyed all your toys because they didn't make you happy anymore." Harley cartwheels back when Chara pushes her back, avoiding that spear. So cutting it in half won't work.

She will have to figure out another plan.

Meanwhile, she takes advantage of the distance between her and the young girl. She keeps the sword ready in one-hand, while her other hand reaches back and pulls out her gun. And she fires several shots at Chara, aiming one shot at her left arm, the next shot at her right arm, and the third shot at her chest.