On television, she starred as the titular role of the RTÉ One crime drama Amber (2014).

Canny was born in Dublin, though she has family from County Clare, specifically Corofin and Newmarket-on-Fergus.

[2] Canny attended St Mac Dara's Community College in Templeogue.

In 2019, Canny played the lead, a feral teenager, in Pollyanna McIntosh's Darlin'.

[4] In 2020, she played Teresa, in two episodes of BBC One's Normal People,[5][6] and Sarah in Dating Amber.