[4] In 2015 she was part of the cast of The Sound of Music Live, a British TV production with Julian Ovenden in the role of Captain Von Trapp and Maria Friedman in that of Mother Abbess.
[5] McKinnis joined the cast of the musical Women on the Verge of a Nervous Breakdown in October 2022 as Cristina.
The UK version of the show included Tamsin Greig as Pepa, Haydn Gwynne as Lucia, with Dutch actress Willemijn Verkaik playing Paulina.
In 2023 McKinnis joined Ivano Turco and Shobna Gulati in the second UK tour of the musical.
John Partridge was also part of the cast as Loco Chanelle with Sam Bailey playing Miss Hedge in spring-summer 2024.