Why don't they even discusse... (SPOILER)
....settling with the brother whose wife has left him, and help raise his motherless daughter?
I say that because in the sequence before in Montreal, the Maya Rudolph character seems to idealize, and want, some mind of "blended family" that includes adopted kids, etc. and you see her sitting on the girl's bed and bonding....so you'd think this option would at least OCCUR to them (?)