I was right. NeoLizabeth is getting MikeClone in trouble for doing nothing.
Panel 1: We start off with MikeClone doing something nice: trying to get baby sister to say "Mama." Her response is to blow him a raspberry.
Panel 2: Not realizing that she hasn't quite learned to understand English yet, he repeats his request with the same result.
Panel 3: He slows it down so that she can get what he's trying to tell her. No joy.
Panel 4: In frustration and defeat, he responds in the only language he thinks she knows by blowing a raspberry at her.
Panel 5: The result: she loudly yells "MAMAAAAAAAAAAAAAAAAAAA!!"
Summary: RevisedElly will not believe that he started out trying to help when she yells at him. Since every interaction he might have with NeoLizabeth will get him in trouble, he will soon learn to resent her.