Cinderella (1950 film) overhears Cinderella humming the waltz played at the ball. Realizing that Cinderella is the mysterious girl, Lady Tremaine locks her in her attic bedroom. Later, the Duke arrives at the château, and Jaq and Gus steal the key from Lady Tremaine's dress pocket and take it up to the attic as Anastasia and Drizella unsuccessfully try on the slipper. Lady Tremaine's cat, Lucifer, ambushes the mice, but Bruno chases him out of the house, allowing the mice to free Cinderella. As the Duke is about to leave, Cinderella appears and asks to try on the slipper. Knowing it will fit,
Marilyn Tremaine editorial boards for journals and has received two university teaching awards. She has also received the ACM SIGCHI Lifetime Service Award, the CHCSS Lifetime Career Award, the 2010 UPA Lifetime Achievement Award, and an Apple Design award. Dr Tremaine is especially known for her work on collaborative software. Her research interests include auditory and multimodal interface design, global software development, and the development of interfaces for the blind and visually impaired. Marilyn Tremaine is married to the astrophysicist Scott Tremaine. Marilyn Tremaine Professor Marilyn Mantei Tremaine is an American computer scientist. She is an expert in human–computer interaction and is