Angie Maitland
From Tardis Wiki, the free Doctor Who reference
Angie Maitland[1] was the daughter of George Maitland and sister of Artie Maitland. After her mother passed away, Clara Oswald became her nanny. (TV: The Bells of Saint John)
Angie discovered photographs of Clara Oswald on the Firebird in 1983, at Caliburn House in 1974, and a photograph of Clara Oswin Oswald in Victorian London. She and her brother used these photos to confront Clara after she got home from Victorian Yorkshire and deduced that Clara was a time traveler. Angie threatened to tell her father about Clara's secret unless Clara agreed to take them on a trip with her. (TV: The Crimson Horror)