For three hours, she did nothing but test the limits of her existence, learning which spells worked (only those impacting herself), what things she could make contact with (the floor and the ground), observing which senses of hers worked on the rest of the world (only vision and hearing), if she could injure herself (slicing curse on her leg and an Avada to her head determined that the answer was no), if her heart was still beating (a diagnostic determined that that was also a no), and an unlimited number of tests to see if there were any exceptions to the rules that would enable her to have further interactions with the world.