During the 1998 City Ballet season, she, Alexandra Ansanelli, Edward Liang and Benjamin Millepied were all profiled by New York Times for their distinction as excellent dancers with the company.

[4] While with the company she performed leading roles in Balanchine's The Nutcracker, Who Cares?, Valse-Fantaisie, Le Tombeau de Couperin, Vienna Waltzes, Tchaikovsky Suite No.

Ash departed the company in 2003 following her father's death, having grown tired of facing years of discrimination as well as being encouraged to leave by City Ballet's director, Peter Martins, who informed her that he did not see her career progressing any further than it already had.

[7] In an interview with Dance Magazine, Ash revealed that she did not enjoy her time at Bejart and left after 2 years because she was constantly being typecast in roles with "fierce, strong energy", and denied the opportunity to revel in her softer side.

[21][22][23][24] Rochester Museum & Science Center celebrated her appointment by declaring her one of its "women who changed the world 'change makers'", along with a dedicated exhibit in her honor.

[26] In January 2021, she was invited by Disney's Dreamers Academy to speak about her journey and share her message “to never let anyone define who you are.”[27] In December 2021, it was announced that Ash will become the School of American Ballet's associate chair of faculty, a newly created position, in summer 2022, while Darla Hoover will be the chair of faculty.

[29][30] Additional appearances include New York City Ballet Work Out II, Sesame Street, and Barbie in the Nutcracker.

They lived in San Jose, California until 2020, then moved to New York when Ash took up her position at the School of American Ballet.