There are a lot of unanswered questions in Amok Time, which probably makes for good fiction.
Stonn didn't appear to be experiencing pon farr, yet he wanted T'Pring and T'Pring wanted him. If the victor had freed T'Pring, would she have married Stonn and lived happily ever after?
T'Pring said if Spock did not free her, then he would be gone, she would have his name and his property, and Stonn would still be there. Convenient for T'Pring, to have both an absent husband and a lover. Is this sort of thing acceptable on Vulcan?
Spock and T'Pring had undergone the bonding ceremony at age seven where their minds were locked together so that they would come together at the proper time. The ceremony worked on Spock, a half-Vulcan. Didn't it work on T'Pring?
Actually, I always thought T'Pring got a bad rap.