SAN FRANCISCO -- Family members passed out flyers and posted them on bus stop Tuesday hoping someone would come forward with information about the whereabouts of 12-year-old Billie McGee, a San Francisco girl who hasn't been seen since leaving for school.

McGee hasn't been seen since she left home Monday morning to catch a bus on Geneva Ave. to head off to school.

The seventh grader is described as being 5-5, 140 pounds. She was believed to be wearing a black and white jacket and black shoes.

McGee's aunt, Theaster McGee, got on board buses as they arrived at the stop on Tuesday, showing riders and drivers Billie's picture and asking if they had seen her.

"We want to know if she even got on a bus," Theaster McGee said. "If she did, she might have gotten off somewhere else."

Billie's other aunt, Debron Broughton, pleaded for the girl's return.

"Just come home Billie," she told KTVU. "If you have her, please give her back. Please give her back."

Her mother, Tina Brown, works overnight and did not arrive home in time to get her to school.

"Her school starts at 8 a.m.," Brown said. "When I knew I was gong to be late (I talked and) asked her if she could take the bus. She said 'Sure, Mommy I'll catch the bus'…That's the last time I talked with her."

Brown called the girl's school at 8:30 a.m. and was told her daughter had not arrived.

"I drove around," a tearful Brown told KTVU. "I followed the bus route…I went to the school…I just drove… I drove everywhere looking for my child."

McGee's classmates Tuesday wrote cards and created signs asking her to return. Counselors were at the school as well as police officers.