“The suspect is thin a black male, between 19 and 23 years old...”
I tell my kids “It’s okay to profile - it could save your life.” And that includes questionable white guys, and young people of any sex or color in a large group.
I was proud of my daughter (now 17). Just the other day she was on her bike, and some lady stopped to ask her directions. “But it was okay - I had a park bench between me and her car, and I spoke to her through the passenger window and had an escape route. It was weird though - where I told her to turn, she just kept going.”
It sounds as if you’ve taught your daughter well. That level of perception is commendable for one so young.
The fact that she followed up (watching as the results played out)is a good indicator as well.