"Teresa, you have ten minutes to pack up your stuff…"
In the end, Cheryl decided to use the excuse of 'we're going to Norland on a missionary mission' instead of 'betraying our faith and God.'
Her reason ended up convincing Teresa. Although the nun's thinking was naive, she knew that she would be wasting her life by staying in the Heresy Tribunal all her life.
Not only that, she will also have to face the danger of execution after Cheryl leaves.
Granted, Teresa was prepared to receive the 'punishment.' Nevertheless, Cheryl managed to win over Teresa and persuade her to not let herself die in such a damned place with her eloquence and the charm of the 'dwarf on a mission to rescue a princess' game.
After they came to a decision, Cheryl led Teresa back to her room and told her to pack up and prepare for their escape.