OK. I was going to suggest leaving her with the kids this afternoon before your family dinner plans, but that's not feasible.
I would be busy doing something manly around the house or yard when she got back. (Are you picking her up at airport or does she have her own car?).
Be upbeat, but not syrupy sweet. Confident, "I'm gonna be okay" is what you want to project, but with "something missing" from the flower-leaving, foot-rubbing guy she left last weekend.
Then I'd do an early dinner with the family, get home and get the kids to bed, CHANGE YOUR CLOTHES (including new shoes -- trust me on this, WOMEN NOTICE SHOES!)/PUT ON DIFFERENT COLOGNE, and tell her the "I'm going out for a bit; I won't be late" thing.
