It just sort of happened.
She attended St Anne's Primary School, , and.
Dubliner Louisa Harland Orla and Galwegian Nicola Coughlan Clare had to do their homework.
It's the side of the city that O'Donnell misses most when work takes her further afield.
Derry Girls is a sitcom that takes the audience back to 1990s Northern Ireland and follows the stories of a group of teenage pals.
And Michelle Mallon is one of those characters to grab our attention.