What Mikey didn't know was that the woman was actually Kelly Robertson, or actually just Kelly, at the moment. She had been wandering the streets of town nearly all day, searching for a new identity. And now, coming into the mall, she may have just found one.
Why hadn't she found one yet? Perhaps it was because she was picky...although many of the changed hadn't known the ones they'd become well, merely finding something that spoke to some part of that. Perhaps it was because at the beginning of the day, people were getting dressed and picking up their lives, and that didn't happen much again till later...or if you went to a mall.
Mikey tailed Kelly Robertson back to the clothing shop, where she slipped into one of the dressing rooms. Someone trying on clothes had left the clothes they already owned there, waiting to be put on.