In 2016, Peiffer's play i wrote on ur wall and now i regret it came in second place for the Kennedy Center's Paul Stephen Lim Playwriting Award.[3] Peiffer wrote for the 2017 Netflix show Gypsy.[6] Also in 2017, a play Peiffer had written about a half-Korean half-white girl coming of age in 1980s Ohio – Usual Girls - was nominated for The Kilroy's List.
In 2018, Usual Girls was featured in The New York Times Critic's Pick[8] and its run was extended twice at the Roundabout Theater Company.[6][9] Usual Girls was also nominated for the Drama Desk Award for Outstanding Play in 2019.[10]
Peiffer also wrote for the 2020 Netflix show Locke & Key.[6] On August 18, 2020, "Finish the Fight" – a virtual play written by Peiffer – premiered as part of The New York Times Events.[11] "Finish the Fight" was commissioned by The New York Times for the 19th Amendment centennial.[12][13] In September 2020, Peiffer tweeted about how she quit writing for Netflix's show Grand Army due to racism.[14][15]
In 2021, Peiffer's short play about an Asian dominatrix and her white client was featured for the Wrath portion of the 2021 New York iteration of Moisés Kaufman's "Seven Deadly Sins."[16] Ngozi Anyanwu, Thomas Bradshaw, and Bess Wohl were also featured playwrights for that iteration of "Seven Deadly Sins."[16]
In 2022, Peiffer, alongside writers Jihan Crowther, Joanna Castle Miller, Gina Young, Anna Ziegler, and Tyler English-Beckwith, worked on the short play anthology — Keep This Far Apart — which focuses on 6 women's experiences and was directed and filmed by an all-female production team over Zoom due to the COVID-19 pandemic.[17][18][19]
