From what the author wrote, it seems likely she was flagged as a person of interest. Perhaps her name was similar or identical to an alias used by someone else, or perhaps she looked very similar to someone on a watchlist. Automated systems can exasperate the problem of persecuting the innocent. For anyone who thinks they are able to make an automated system for law enforcement that does not provide false positives, I strongly recommend you think twice.
For anyone interested, the author has a gofundme page. [0]
[0] https://www.gofundme.com/f/A-Love-Letter-To-Durham-North-Car...