Howard is most known for playing Siobhan in The Twilight Saga: Breaking Dawn – Part 2 and Rona Lisa Peretti in The 25th Annual Putnam County Spelling Bee.

In 2012, she was cast as Siobhan, a member of an Irish coven, in The Twilight Saga: Breaking Dawn – Part 2.

On October 6, 2020, the Lincoln Project released a video called Covita[4] a parody of Evita criticizing Donald Trump for failing to protect staff from the COVID-19 pandemic.

[5] Howard originated the role of Jenny Steinberg in the Broadway production of David Hyde Pierce-directed It Shoulda Been You.

[6] For her performance, Howard was nominated for the 2015 Drama Desk Award for Outstanding Actress in a Musical.