Covid-19 miraculously woke up on the day her life support machine was due to be switched off - and her family had already chosen a headstone for her.Bettina Lerman, from Maine in the US, hadn't responded to doctors' efforts to wake her from a coma, prompting her family to make the difficult decision to take her off life support.But after they'd already made her funeral arrangements and even picked out a coffin as they prepared to say goodbye, Bettina, 69, woke up - much to the shock of everyone.Her son, Andrew Lerman, told local media he got a call from one of his mother's doctors at the Maine Medical Center in Portland on October 29.He said: "He's like, 'Well, I need you to come here right away.' I was like, 'OK, what's wrong?"He goes,.