Edit: I admitted I wasn't an expert. It was a gut feeling - maybe next time I'll skip the burritos at lunch.
Panel 4: Now that is a compliment. An honest-to-God compliment, so of course April gets all indignant. Can't have her acting like a normal person - she must show flashes of Martian behavior.
Panel 5: Sigh. See above. Can't we, for once, just have April accept a compliment instead of acting like it's an insult?