Born in Tallinn, Estonia, Mirell began her training in Los Angeles, CA, at the Yuri Grigoriev School of Ballet. She continued her professional training at the Central Pennsylvania Youth Ballet under the direction of Marcia Dale Weary. She has spent summers dancing with Complexions Contemporary Ballet, Boston Ballet, Tulsa Ballet, and the Kirov Academy. She spent a season with the Oklahoma City Ballet and has been featured in guest work with the Napoles Ballet in San Francisco. She recently performed in the Oregon Festival of American Music's productions of No, No Nanette! Since joining EBC, Mirell has performed in works including Romeo and Juliet, Rite of Spring, The Nutcracker, and All You Need is Love.