Panel 1: Since Liz isn't wearing shoes, she tells Dawn to slow down because it's hard keeping up with her and nursing sore feet from the stones on the sidewalk.
Panel 2: When asked why, Liz dunno and guesses she forgot.
Panel 3: Dawn can see only one course of action.
Panel 4: Said course is to loan Liz a shoe so both can be half-comfortable because children are stupid and can't make good choices without Mommy booming in their ears.
Summary: Mean people who hate mother love suggest that neither is looking forward to more self-pitying and arch nonsense from a nitwit who's so bloody arrogant, she refuses to look at the people she's talking down to.