No, she wouldn't.

She said that my enchantment had disabled those knights; they were not riding on, because they couldn't; wait, they would drop out of their saddles presently, and we would get their horses and harness.

I could not deceive such trusting simplicity, so I said it was a mistake; that when my fireworks killed at all, they killed instantly; no, the men would not die, there was something wrong about my apparatus, I couldn't tell what; but we must hurry and get away, for those people would attack us again, in a minute.

Sandy laughed, and said: "Lack-a-day, sir, they be not of that breed! Sir Launcelot will give battle to dragons, and will abide by them, and will assail them again, and yet again, and still again, until he do conquer and destroy them; and so likewise will Sir Pellinore and Sir Aglovale and Sir Carados, and mayhap others, but there be none else that will venture it, let the idle say what the idle will.

And, la, as to yonder base rufflers, think ye they have not their fill, but yet desire more ?" "Well, then, what are they waiting for?
Why don't they leave?
Nobody's hindering.