Panel 1: As Liz hums to herself and plays with her Little People, she has the mommy doll tell the child doll that it's almost time for school and has the child doll ask if she can wear her new dress.
Panel 2: She then has the Mommy warn the child not to miss the bus and the child promises not to.
Panel 3: We zoom out a bit to see that Georgia has been watching all of this with a certain level of fascination. Her response to all of this is to tell Liz that she looks to be really excited about the upcoming return of school. Liz says that she knows this.
Panel 4: When she says that she's the mommy (and thus glad to have the kids out of her hair for ten months), Georgia is totally gobsmacked because she's just realized that if she does have children, she'll become the same frustrated mess Elly is.
Summary: The problem with Elly's constant babbling about regaining her sanity for ten months is that we know the future. Said future fools all of us because no matter how Elly wishes that she could be said to be done raising it when it turned sixteen, it asked to be born so it could destroy Elly's hopes of career and travel.