"Miss O’Donoghue mingles an air of youthful ardor and righteous pique to great effect.
There is a sort of dream sequence at the opening of Act II where we meet the founding fathers...Special mention must be made of Miss O’Donoghue’s portrayal of South Carolina’s Charles Cotesworth Pinkney. She plays the role with swagger and style."
—Lydia Arnold on The Taming
"As Jack's girl Marie, Glynnis O'Donoghue manages to play a pivotal role in the denouement with comical reluctance, transformed from a sexual object into a sacred one."
—Perry Tannenbaum on Incorruptible
"The second tryst is with Bobbi (Glynnis O'Donoghue), a wannabe actress and singer, who has a habit of flitting dramatically and rapidly from one topic to another, becoming paranoid about the nameless men in hot pursuit of her, or about Barney's suspecting she was gay, only because she sleeps in the same bed as her Nazi vocal coach, also a woman. Bobbi breaks out into songs like, "What the world needs now is love, sweet love." They are delivered at inopportune moments and with as much gusto as O'Donoghue can hilariously summon up."
—David Begelman on The Last of the Red Hot Lovers
"The real finds here are Ian Bond as Alex and Glynnis O'Donoghue as Ellen, both out of the Davidson College theater program. O'Donoghue's comedy bravura, in particular, brings Ellen to the forefront. On Broadway, she receded to the background as troublesome baggage. You'll like her -- almost as much as Diane does."
—Perry Tannenbaum on The Little Dog Laughed
"She gets dynamic direction from Glynnis O'Donoghue, with an effective blackout separating the main action from the emotional in-your-face coda...Grounded leaves you thinking after its hour is done. "
—Perry Tannenbaum on Grounded