It's because there were so many interesting things to be distracted by! Though she could focus when she needed to.

"I don't know." Sophie answered, almost puzzled by the question.

Fortunately by this point, poor Taiga had managed to get his breath back... or at least enough of it to try to explain the situation, still wheezing a little, "K.. kupo, she's one of the new Heroes of Light," Taiga took a deep breath and let it out again in a PUFF of airkupo. "But she doesn't have any memories, kupo. Not even her name."