(Strip Number 4999, Original Publication Date, 28 July 1988)
Panel 1: We see a camp counselor I'll call "Ashleigh" calling roll for Cabin D. Accompanying Lizzie and Dawn are shout-out Luccia Messina (she'll be who the notes are about), Ranjeet Singh (because Lynn doesn't know that's a boy's name), Kietha O'Leary and Patti Scott(also a probable shout-out).
Panel 2: Since Lynn isn't especially good at understanding how groups of people behave, what we don't have is Lizzie and Dawn chatting by themselves while the other girls look at their surroundings in confusion when Ashleigh tells them to choose a bunk, unpack and take the next half hour getting to know each other.
Panel 3: This is also why Lizzie and Dawn behave as if they don't know each other from Adam as Ashleigh smiles indulgently over her shoulder at six shy little girls who are afraid to speak to each other.
Panel 4: This is so we can contrast the lovely time Lizzie has at camp with the terrible time Mike does for the first few days with Ashleigh spouting goodthink about how every good friend was once a stranger.
Summary: While Lynn will surely crow about sending a message to a friend, it seems obvious that we're meant to contrast how Lizzie has a great time at camp with Mike having a lousy one because he's got a bad attitude.