[3] While performing in a youth production of West Side Story at the Millennium Forum in Derry, Wisener was spotted by a talent scout, who asked her to audition for a role in Sweeney Todd.

[4] She trained at the Royal Scottish Academy of Music and Drama for one year but left after landing the role of Johanna in Sweeney Todd.

Wisener made her stage debut in the UK premiere of the musical Parade at the Donmar Warehouse theatre in 2007.

In late 2009, until early 2010 she appeared on stage playing the role of Mary Lennox in The Secret Garden at the West Yorkshire Playhouse.

In March 2011 she played Sally, a young woman in a centre for female juvenile delinquents, in The Runaway, based on Martina Cole's novel.