Panel 1: We start things off with Elly looking at the top of the dresser drawer in the master bedroom and clearly finding things to be not to her satisfaction.
Panel 2: She frowns the pious frown she usually reserves for turning her back to her children when they cannot be looked at as she rearranges the tidy little pile of personal belongings the "right" way.
Panel 3: She continues to frown haughtily as she informs John that he's moved his belongings to his end of the top of the dresser.
Panel 4: When he says that he didn't know that there were separate ends to the dresser drawer, she looks at him as if he's a big idiot and explains that of course there are.
Panel 5: His end has the photos on it while hers has the jewellery box.
Panel 6: She concludes by saying that all of his stuff goes on his end and all of hers goes on hers so she doesn't have to be exposed to the chaos that drives her nuts. He responds by saying "Oh."
Panel 7: When he starts to place a whole lotta buncha envelopes in the middle, she asks him what he's doing.
Panel 8: When he says that he's putting the bills in the middle, she's left gobsmacked.
Summary: This is because she doesn't like being reminded that she wouldn't have nearly as much stuff to fuss over if he didn't work like a piston to pay for everything. Well, she has no real recourse because she did set out to land herself a meal ticket to avoid having to really work for a living.