It depends on how old the dynamite is. Some VERY OLD dynamite could be set off with a flame or spark and was based on nitroglycerin. Anything she likely had was newer than that, as the nitroglycerin tends to sweat out of the wrappers and form pools on the surface it is resting on. Very difficult to clean up. So unless the dynamite had a blasting cap and time fuse inserted, it likely did not actually detonate.