Currently Sibyl is also designing Our Mother's Brief Affair, a new play by Richard Greenberg directed by Pam Mackinnon for South Coast Repertory. She has also designed A Little Night Music, Charlotte's Web, and James and the Giant Peach for SCR. Recently, Sibyl designed The Trial of the Catonsville 9 at the Actors' Gang, Toy Story: The Musical for Disney Cruise Lines, Some Girl(s) written and directed by Neil Labute for The Geffen Playhouse, Of Equal Measure and No Child for Center Theatre Group's Kirk Douglas Theatre.
Recent regional credits include Black Diamond at Lookingglass Theatre in Chicago, and a bilingual production, Dos Pueblos, created by an international collaboration between theatre artists in Portland (HandtoMouth) and Mexico City which premiered in Portland, OR, at Milagro Theatre.
Sibyl also teaches part time at USC and CSU Long Beach.