Panel 1: Francie, who they picked up from preschool, peeks her head into the den to find out what that noise was to which Anthony replies that they were discussing something. This is a good thing because as a future member of the Patterclan, she needs to learn that 'discussion' means 'yelling'.
Panel 2: He explains that they were talking about getting married at some unspecified date in August 2008. Liz then asks if that's OK with her as if she actually cares what the child thinks.
Panel 3: Liz then asks how the child would feel about her living there forever. Françoise's response?
Panel 4: She wants to know if she gets to keep her own room. Good question. Do they have a good answer?
ETA: As in "Meet your new Mommy", perhaps?