Girl tries not to laugh at beginning of interview
Always looking to the right when asked to recall something (Implies imagination as opposed to memory)
Tucker asks what store the shooter worked at since she said she remembered him from one. She pauses as if awaiting instruction, and then very definitely says the dollar store whilst hesitating.
Tucker mentions that she seems very calm, girl immediately acts more destraught and pulls a saddened face.
Other than that, she is talking very robotically as if reading from a mental script. These are not her own words and she is not thinking them up on the spot.