She is most known for voicing Nadie in El Cazador de la Bruja, Mikasa Ackerman in Attack on Titan, Kyoka Jiro in My Hero Academia, Kurisu Makise in Steins;Gate and Etie in Fire Emblem Engage.

[3][4] She graduated from Amarillo High School,[4] and later got her Bachelor of Arts degree at the University of North Texas at Denton.

She voices Nadie in the girls with guns series El Cazador de la Bruja, and Mari Illustrious Makinami in Evangelion: 2.0 You Can (Not) Advance.

[6] In the hit anime Attack on Titan, she voices the lead female character Mikasa Ackerman.

[7] Nishimura is in a relationship with Dallas-based chef Justin Holt, who opened a ramen restaurant called Salaryman in September 2019.