Working with the Royal Shakespeare Company (RSC) in Stratford, Crowther was cast in productions of Middleton and Dekker's The Roaring Girl, John Webster's The White Devil, Massinger's The City Madam and Weiss' Marat/Sade, a 'reimagined' version of Cardenio (Shakespeare's lost play) by Gregory Doran, Song of Song (adapted from the biblical text) and The Witch of Edmonton by Dekker and Ford.
Crowther played the title role in Richard III, performing the show and conducting workshops on tour across the US, with 'Actors from the London Stage'.
Later, she featured in Shoestring, Watching, Slinger's Day, French Fields, The Dumping Ground, Outnumbered, Mansfield Park, Holby City, London's Burning, Miss Marple, EastEnders and A Very Peculiar Practice.
Beyond these appearances, Crowther was a regular cast member in soap opera Family Affairs, playing Annie Hart, from its debut in 1997, until 1999.
Crowther works with Scene & Heard, a playwriting charity committed to benefiting disadvantaged children in Somers Town, Kings Cross, London, performing alongside other volunteer theatre professionals.