Sarah says that the inspirational poster she can't stop thinking of is in her mom's room, but it can be seen in Episode #5 (1995) (Episode 5 specifically), in what appears to be Sarah's room, since in that episode Sarah is hanging out sitting on the bed when her mom shows up to visit. Since this is her inner monologue, it seems unlikely that Sarah is lying out of embarrassment that she has such a poster, especially since it's the kind of thing that would have been provided and hung by her mother, so Sarah would have nothing to be embarrassed about.