Francesca is about to make her continental debut and her former school friend Susan visits before the concert. When Nicholas enters the dressing room, Susan is heard speaking while her reflection can be seen in a mirror behind Francesca (her spoken words aren't synchronized with her reflected image).
When Peter writes a note to Francesca in a nightclub, she turns it over and writes her reply on its back. But when Peter holds up the note to read her answer, its back is blank; his original note is missing.
When Francesca performs in her first concert, she is wearing a small cross necklace. When she faints at the end of the concert, the necklace has inexplicably disappeared in the close-ups of her on the stage floor.
Near the end, when the doctor and the portrait painter speak about Francesca getting married, the painter is told he needs Mason's permission. She was 17 when she moved in with Mason and it's now 10 years later. At 27, she no longer needs his permission since she is now of age.