[8] During this time, Tigelaar wrote for many shows including, Kyle XY, What About Brian, Side Order of Life, Brothers & Sisters and Dirty Sexy Money.

[10] On May 22, 2009, The CW announced they had picked up the new series from Tigelaar, with shows name changed again and this time under the name Parental Discretion Advised.

The series tells the story of teenager Lux, who had been through the foster care system for almost her whole life and decides on her 16th birthday, to become an emancipated minor, but before that occurs, she has to get signatures from her unknown birth parents.

[17][18] Similarly, Randee Dawn, from The Hollywood Reporter stated that Tigelaar "has a delicate, spot-on feel for dialogue.

[22] It was announced on August 19, 2011, that Tigelaar was reteaming with former Life Unexpected executive producers Gary Fleder and Mary Beth Basile on The Joneses, a drama series in development for ABC.

[23] In July 2012, after ABC had passed on the project, it was reported that cable channel Bravo had picked the series up to development.

Episodes she contributed to included: In fall 2011, Tigelaar signed on to the ABC drama series Revenge as a writer and consulting producer.

[29] She served as developer and showrunner on the miniseries Little Fires Everywhere that was released by Hulu in March 2020 and produced by ABC Signature.