[4] She appeared as Agnes with Douglas Fairbanks, Sr., Amelia Bingham, and William H. Crane in The New Henrietta, a play based on a comedy by Bronson Howard, produced at the Knickerbocker Theatre on Broadway in December 1913.

Her acting was acclaimed by a New York Times critic, who wrote, "Miss Collinge plays with the soft, pliant sincerity that makes her one of the most endearing actresses.

"[citation needed] She was a member of the original Broadway cast of The Little Foxes with Tallulah Bankhead as the lead in 1939, playing the role of the tragic Birdie Hubbard.

Other stage work included roles in productions of The Heiress, Just Suppose, The Dark Angel, The Importance of Being Earnest, To See Ourselves, and Lady with a Lamp.

[citation needed] Collinge wrote the play Dame Nature (1938), an adaptation of a French drama by André Birabeau, in addition to some short stories for The New Yorker, and contributed to The New York Times Book Review.

[7] She also wrote The Small Mosaics of Mr. and Mrs. Engel, a travelogue that earned her a gold medal from the Italian government, and The B.O.W.S., which she co-authored with Margalo Gillmore.