A 13-year-old girl was reported missing last week after last being spotted at near UCSF's Madison Clinic for Pediatric Diabetes, where her younger sister was being treated for type 1 diabetes.

As reported by KTVU, Stacy Wilson, the girl's mother, said that her daughter was feeling carsick from the long drive and went outside for "some fresh air" upon arriving at the San Francisco medical center Friday  at 3:30 p.m. The girl then disappeared.

Surveillance cameras show the girl exiting the clinic at 3:30 p.m. and texting on her cellphone. Eyewitness reports say she soon left for a local eatery, where she stayed for two hours. After leaving the restaurant, the teenager was met by an unknown Hispanic-looking man, before entering his car and taking off.

Wilson said that law enforcement had tracked her daughter's cellphone to an address in Antioch, but “the police went there and it ended up being a family home and they had no knowledge of [the girl]," she added. The teen's family also published both a Facebook group and a GoFundMe fundraiser to help find her.

As of Sunday evening, as KPIX reports, the girl was found at San Francisco's Ferry Building in the company of a 22-year-old man who was then taken into custody. The girl was reportedly located with the help of citizens who recognized her from photographs circulated on the internet.

The SFPD is leading the investigation into the girl's disappearance.

Related: 11-Year-Old Autistic Boy Goes Missing, Takes BART From Concord To SF (2016)

Image: GoFundMe via the family

This post has been updated throughout.