What about her VOICE? Does her voice changes as well when she changes her look?
I mean cos otherwise it should be easy to recognize her, after talking to her both at the store and at school.
I mean hell, as someone that works in in a restaurant I absolutely speak to customers in a totally different way than I do when I'm just normally speaking to someone. I've also had coworkers tell me that I speak in a lower voice when I answer the phone.
It's also a confidence thing! People speak different when they're appearing the way they want to and in a space they're comfortable in.