Her uncle uses Alice's flexible body against her. The extreme strapaddo and ballet shoes cause a tremendous amount of pain. That's certainly not where it ends. It's merely the beginning. For the training to take hold she's going to have to receive more than pain.
Expecting Rita Rollins to be the perfect submissive from the second she was in bondage may have been a bit lofty of a goal, but aiming high is how we give the best training to the slaves in our care. O.T. has simple instructions. Don't whine, moan. Don't cum until you are told. Beg, plead, and grovel as necessary to receive even more intense BDSM.