Teenage schoolgirl, 15, runs away with 30-year-old teacher Her father, Martin Stammers, said: "We just want Megan to make contact with us. We are worried and miss her terribly. Please get in touch, Megan. Tonight, Chief Inspector Jason Tingley said they were at a "critical stage of the investigation" and officers were grateful for the support of Megan's family and friends. Appeals for information about her whereabouts have been posted on Facebook and Twitter, including from her worried father. He tweeted: "Have to remain strong for Meg's, can't dwell in the misery of 'what ifs' - we love you sweetheart, doing all we can #findmeganstammers." One poster on Facebook wrote: "Hope she's back home with her family soon." Officers have appealed for information about the whereabouts of a black Ford Fiesta, registration GJ08 RJO, driven by Forrest, from Ringmer, near Lewes. Mr Tingley, the Lewes district commander, said: "We are investigating several lines of inquiry and are grateful for the support and cooperation from Megan's family and friends." He added: "Her family are incredibly worried and want her to come home."