By Gemma Ryder & Paul Greaves A devastated mum, whose daughter died from a rare brain condition, has warned of “red flag” symptoms in the hope that other parents will not experience the same tragedy. Gemma Caffrey, 12, passed away in 2021 after suffering from intense headaches while on a family trip with her parents. In the days prior to her death, the schoolgirl, from Hamilton in Scotland, had been waking in the night unwell. She sadly lost her life two weeks after being admitted to the Great North Children’s Hospital in Newcastle. An inquest into her death said she died of Cerebral Venous Si…