Although she is portrayed as weak and the ultimate loser, for Jeff Johnson, author of a book about morality in Lynch films, Diane is the only character in the second portion of the film whose moral code remains intact.
Premda je prikazana kao slabić i ultimativni gubitnik, za Jeffa Johnsona - autora knjige o moralu u Lynchovim filmovima - Diane je jedini lik u drugoj polovici filma čiji moralni kod ostaje nedirnut.