(Strip Number 5101, Original Publication Date, 13 March 1989)
Panel 1: Elly stops pretending she believed Liz and tells her flat out that she'd sent her to get milk (which she shouldn't have done and probably only did in order to have something to be angry about anyway) and something happened. She neither notices or cares that Liz is crying because she will not ever admit that someone she's mad at has feelings or is sorry because yelling at good children hurts her too much.
Panel 2: She then asks Liz what she did with the milk.
Panel 3: Elly tells her not to lie to her because the truth will come out sooner or later.
Panel 4: Since Liz doesn't realize that Elly isn't ever going to hit her, she thought-bubbles "I was hoping it would be later" because she wants Daddy there to protect her from the monster.
Summary: As I've said before, this sort of crap is why it is that eventually, Elly stands there whining to Anne that for some reason, Liz doesn't like to talk to her about anything. This is because Elly cannot step outside herself and see herself as Elizabeth sees her: a rock colossus of anger and judgment with no more give to her than a block of granite.