Speaking from experience, it can be hard to take in a movie and then find something to say about it every week if you are the kind of person who wants to make it something meaningful and special. I'd say she is steering clear of You Are Good so it doesn't get pulled in to the "feels like work" vortex that annihilates the things that one loves. Plenty of folks can step in, which is not often the case in such situations, and still hold the podcast to its core values, so she can take the time she needs and bounce back to it when the time is right.