Six months after Lina's disappearance, her mother hopes for testimonies. “If anyone remembers anything, has forgotten to say something, a detail, it must be said, it is never too late,” declared Fanny Groll.

Lina, 15, left her home in Plaine in Bas-Rhin to go to the Saint-Blaise-la-Roche station. The teenager's phone went off the air at 11:22 a.m. and has not been found.