[5] Among her notable stage roles in recent years, is a Romanian-language production of The Blue Angel (Îngerul Albastru in Romanian) at Bucharest's Odeon Theatre.

At the same time, she also played the role of Kathleen Hogan in a Romanian-language production of Israel Horovitz's Park Your Car in Harvard Yard at the State Jewish Theatre.

[7] Her surname, Morgenstern, means "Morning Star" in German, is a title of the Virgin Mary, the character she played in The Passion of the Christ.

[8] In interviews, she has defended The Passion of the Christ against allegations of antisemitism,[9] saying that the high priest Caiaphas is portrayed not as a representative of the Jewish people, but as a leader of the establishment, adding that "Authorities throughout history have persecuted individuals with revolutionary ideas.

"[10] On 29 March 2021, a Romanian man was arrested after Morgenstern received an email stating "I intend to throw her in the gas chamber".