From July to August 2017, Lynch starred in a revival of Enda Walsh's "Disco Pigs" at Trafalgar Theatre. It was later transferred to off-Broadway at the Irish Repertory Theatre and played from January to March 2018. In November 2017, it was reported that she would star in the independent drama "Indigo Valley", directed by Jaclyn Bethany, but was forced to drop out of the project due to scheduling conflicts and was replaced with Rosie Day. Lynch appeared in a cameo role in Jason Mewes' directorial debut "Madness in the Method" (2019). On 12 September 2018, Lynch was announced as one of the celebrities to compete on season 27 of ABC's "Dancing with the Stars". Her professional partner was Keo Motsepe. Motsepe and Lynch made it to the show's finale, finishing in third place.