Films Powell has edited

http://www.imdb.com/name/nm0774817/

She has edited many Scorcese films:

Raging Bull (1980) Oscar Award Best Film Editing 1981- Schoonmaker
Goodfellas (1990) BAFTA Film Award Best Editing 1991 - Schonnmaker
Cape Fear (1991)
The Departed
The Aviator (2004) Oscar Best Achievement in Editing 2005 - Schoonmaker
Shutter Island (2010)
Bad - Micheal Jackson Music Video