Ami lit a match out of pure pyromania, and thinking it was extinguished put it down... too close to the rest of the box of matches, which subsequently lit on fire, and she sat paralysed unable to act while the fire burnt itself out. Remember; no matter how competent your Oshi may seem, she is but a hairs edge from self immolation, both in a metaphysical and literal sense.
(edit) ninja'd by a second WTF
(edit) ninja'd by a second WTF