Millis's eyes were opened by Morgan. With his help, she was able to put her plan into action.
However, Millis might be young, but she definitely wasn't an idiot.
She did make the recordings, but she lied to Morgan and said that she couldn't make the videotapes because of Manny.
However, she secretly recorded Morgan planning the blackmail operation, which was on the videotape that had a unique number on it.
Millis had placed the hidden camera disguised as a piece of artwork in Manny's room to test that it was working while she was putting on her makeup.
Her declaration about teaching Manny a lesson and making Jennifer listen to her was all about the videotapes.
If she did get ten million dollars, she certainly wouldn't work as a maid anymore.
Furthermore, the perfume was something that Morgan had gotten for Millis, which had an aphrodisiac quality.
