Mamie Laverock has thanked donors who gave nearly $40,000 to her GoFundMe page following her near-fatal fall from a fifth storey balcony. The 20-year-old actress, famed for her role as nursing student Rosaleen Sullivan on popular Hallmark show ‘When Calls the Heart’, is lucky to be alive after she plunged to the ground in May in an accident her mother branded “negligence” by medical authorities. She has now spoken out about her recovery in a new post on the GoFundMe page her family set up to help fund her treatment after it pulled in $39,022, with her parents adding it was now closed. Mamie sa…