Daughter of murdered Sandy Hook elementary school principal pens heartbreaking letter to her mother on 11th anniversary of the massacre as she faces cancer battle: 'I hate that I can't call you and tell you how terrified I am'
Erica Lafferty was 27 when her mother Dawn Lafferty Hochsprung, was murdered in the 2012 school shooting in Sandy Hook, Connecticut, along with 25 other people.
Source: dailymail.co.uk
