You get it! Just looking at her, she looks honest, I believe her account. She has/had no axe to grind. The black guy (resident) simply did not have his key to the buildings front door AND then winged it from there.
“The black guy (resident) simply did not have his key to the buildings front door AND then winged it from there.”
What makes you think he did not have a key to the building?
It is also possible that he pushed the button on his fob while walking up, and she just didn’t know, and he just didn’t feel like being civil to her and show her he had the fob.