The boy looked a bit tense as Ann had answered his questions. She wasn't sure what was causing that but she had hoped the boy had a related incident or knows someone that Ann and Ariadne went through. 

Just as Ann was beginning to warm up, the conversation took an turn for the worst. The boy just laughed at Ann's question as if it she just asked something stupid. Ann frowned as she watched the boy laugh hysterical and eventually collapse from his heaps of laughter. Ann felt really bad now as her face felt as if was burning bright red, but being a ghost, her face appeared unchanged. But as the boy continued his frantic laugh, Ann's eyes began to water as she began to feel really insulted. 

[i]Was it really that funny?[/i]

Ann just wanted to leave now. The boy was finally catching his breath and he told Ann in a very matter-of-factly way that he wasn't dead. "Oh..." Ann managed to whimper her response before she spun around and floated away from the boy and Ariadne. She felt hurt by not only his laughter, but also a feeling of being betrayed after just barely opening up. She didn't want Kuro to follow as her ghostly form phased through the break room wall, breaking down in a sniveling cry that could just be heard in the mortal plane. She continued her course through the Reformist HQ, phasing through walls and startling some of the quieter rooms as she passed through them.

...

Meanwhile Ariadne had not be okay with where that conversation had been going. She couldn't hear or see who Kuro was talking to but she could see and hear Ann having a one-sided conversation. After hearing her sister whimper, she snapped. She quickly rose out of her chair and then grabbed it, tossing it across the room. It soared at an amazing speed and the plastic chair shattered as soon as it impacted the wall. Then she stormed out of the room, flipping aside any tables or chairs that stood in her way. She reached the door and very roughly tossed it open with a bang and marched out into the hallway. She was huffing with anger as she attempt to track her sister down.