[1] Her parents moved to Portnoo, a village beside Narin in the west of County Donegal, Ireland, when she was four.
She attended St. Columba's Comprehensive School in Glenties, County Donegal.
Brett joined BBC Radio Foyle in 2004, later occasionally working on Good Morning Ulster and Talk Back at BBC Radio Ulster.
In May 2019 she replaced Phil Williams as host of the late evening show, 10.30 pm to 1.00 am, Monday to Wednesday.
[4] By the time the new presenters came on air Covid had arrived and it would be several months before they came together in the one studio.