ETA: Elly indeed wants her mommy.
Panel 1: A bleary-eyed and self-pitying Elly thought-bubbles that when Mike and Lizzie are sick, she takes their temperatures, reads them stories and rocks them to sleep.
Panel 2: She follows that by reminding us that when John is sick, she rubs his back, brings him stuff and keeps the kids quiet.
Panel 3: She blows her nose with such force the words SNIVEL-HONK-PHWEET-SNUFFLE materialize out of thin air.
Panel 4: Since nobody is there for her despite her having to drop everything for them, she yells that she wants her mom.
Summary: The real problem I have with this first-year strip is something that howtheduck pointed out; in the original, Elly simply had a brief summer cold, not the God-damned polka-dot plague. Its alteration here only serves to make John into a more repulsive human being....which, I believe, is the point.