In 2015, she originated the role of Suzanne in the world premiere of "Amélie" at Berkeley Rep, directed by Pam MacKinnon, book by Craig Lucas, music by Daniel Messe, lyrics by Nathan Tysen and Daniel Messe, musical staging by Sam Pinkelton, and musical direction by Kim Grigsby. In 2016, she returned to the Public, where she first studied Shakespeare, to play the Nurse in "Romeo and Juliet", directed by Lear DeBessonet for the Mobile Shakespeare Unit. In the summer, she played Macbeth in a critically acclaimed 3-women production of "Macbeth", directed by Lee Sunday Evans, which the New York Times hailed as "irreducible and transcendent," and Jacques in "As You Like It", directed by Gaye Taylor Upchurch, both at Hudson Valley Shakespeare Festival. In Spring 2017, Maria-Christina returned to Broadway in Amélie the Walter Kerr Theatre, in the role of Gina after a sold-out pre-Broadway run at the Ahmanson in Los Angeles. She subsequently went on to star in "We're Gonna Die" by Young Jean Lee at the Ancram Opera House. In Spring 2018, she returned to Los Angeles and Center Theatre Group for the world premiere of SOFT POWER, a new play with a musical, book by David Henry Hwang, music by Jeanine Tesori, directed by Leigh Silverman, choreographed by Sam Pinkelton and music directed by Chris Fenwick. In Fall 2018, Maria-Christina returned to New Haven to do the world premiere of "El Huracan" by Charise Castro Smith, directed by Laurie Woolery at the Yale Repertory Theater. She is currently developing "Kiss My Aztec," a new musical by John Leguizamo and Tony Taccone, music by Benjamin Velez, lyrics by John Leguizamo, Benjamin Velez and David Kamp, and directed by Tony Taccone, which she has been a part of since Atlantic Theatre's Latino MixFest in 2015. As a vocalist, Maria-Christina has lent her talents to such esteemed artists as Taylor Mac, Toshi Reagon, and Heather Christian. She was a featured vocalist for the world premiere of Taylor Mac's A 24 DECADE HISTORY OF POPULAR MUSIC at St. Ann's Warehouse, and subsequently the West Coast Premiere at the Curran in San Francisco. Maria-Christina has also been a part of the development of THE PARABLE OF THE SOWER, based on the book by Octavia Butler, created by Beatrice and Toshi Reagon.