That is what a treatment plan looks like for panic disorder and agoraphobia. The goal is to help Sarah get past that 100, the peak of her exposure hierarchy. And she achieved that, after building confidence and learning strategies for a more effective approach to anxiety.
From there, you might conduct a review, including discussion of the most helpful tools. Encourage clients to write those down, because they remember them in the moment when they’re using them on a regular basis, but maybe not for good.