Runaway vs. non-family abduction

It often happens that a young girl chooses to run off with an older (usually of age) boyfriend. In most cases, when this occurs the NCMEC lists the girl as a runaway and says she “may be in the company of an adult male.” Not always, though. Some of these girls are classified as abducted, and I’m not sure why. It seems to be like a completely random thing.

I thought it might have to do with age. Not so: Janet/Janeth Munoz, who wasn’t even twelve and a half, is listed as abducted on the California DOJ database but as a runaway with the NCMEC. Nor do the authorities have had to issue a warrant for the girl’s boyfriend: there is apparently no arrest warrant out for Reyna Alvarado-Carrera‘s boyfriend. Chioma Gray is listed as endangered missing, neither abducted nor a runaway, in spite of the fact that her boyfriend has a slew of warrants out for him connected to their flight. On the other hand, Diana Gonzalez, who is missing under very similar circumstances, is listed as a non-family abduction. What gives?

Go figure.