A Cambria County teenager, missing since Monday desperately needs medication to control her Tourettes syndrome. Now her parents ask for your help again.

Channel 6 introduced you to Sarah's glass's family on Tuesday, now another plea. Sarah's mother says it's essential Sarah get her medication. She's taken it for years to control her Tourettes and she's been without that medication for four days now.

Lenora Glass, Sarahs mother says, She would become very sick and if somebody saw her and she was really sick, maybe they could give her medical attention.

When the Glass's woke up Tuesday morning, Sarah was gone. They never heard her leave. Before she went to bed, she was wearing this exact outfit and her parents believe this is what she left in.

When you look around Sarah glass's room, you see signs of a typical teenager. She collects snow globes and she's a whiz with a sewing machine, but this teenager is also proficient on her computer, and her parents say, that's where the problem may lie. Police have a theory. Sarah may have left to meet up with someone she met on the internet.

The only thing she took with her was one night's worth of medication - one reason her parents believe she meant to come back, but four days later, the 16 year-old is still missing. Now Sarah's parents cling to a blanket of hers for comfort and hope that she'll come home soon.

Lenora says, If anybody sees her, please call the state police, please.

If you have any information, you can call the Pennsylvania State Police at (814) 471 - 6500.