[Homura doesn't ready a weapon except her magic, the soul gem on her hand glowing threateningly. There being no military or organized crime here, her options are a bit limited. With Madoka right there, she can't exactly use explosives, and a golf club or metal pipe is hardly as easy to ready just this moment.]
You can probably guess as well as I can.
[However, another prompt issues from the robot again, commanding them to "Kiss!"
Homura, having been just about to demand a second time freezes staring up at it. Kiss? And the dangling plant is something she just happens to recall having seen in an American film once, the puzzle assembling in her mind with an unshakable sense of dread.]