(At 37:04) In the hand-written note from Dot to Elsa, the Brodie twins' surname is incorrectly spelled as "Brody."
Jimmy Darling sings "Come as You Are" in a rehearsal; the show is set in 1952, but Nirvana did not write "Come as You Are" until 1991.
Dot sends a hand-written note to Elsa to indicate her desire for separation surgery. When the note is shown on screen, the word "separated" is misspelled as "seperated," which is a fairly common mistake.