At least how I saw it - it's clear that Laurey knows Curly is the right choice for her life overall, but there is a raw sexual attraction to Jud. They share some glances during the opening based on where they're seated onstage. The ballet ends with the dancer pulling herself on the floor towards where Jud has just exited with this raw sexual passion. Then later when Jud speaks with Laurey after the auction, the scene is presented in complete darkness and into a microphone. Even without seeing them, the sexual tension is high.
It's always clear which way Laurey will go, but for the first time it appears to be an actual internal struggle. The character, and the story as a whole is better for it IMO.