Why does my wife have to be rude? Somebody enlighten/remind me of the behavior of a WAS, please.

Scenario
Wife comes to pick our son for a few hours of personal time before she goes out of town for a week...

W: So when do you think you're doing to pick him up later?
M: Well, how about after dinner? Or...
W: [Rolls her eyes] Tell me WHEN would THAT be? I have no idea what dinner time is.
M: You know, let's just do it before his bedtime...so 7pm.

Is she miffed that she won't be seeing our son for 2 weeks (she out of town for one week and he'll be with me one week when my family comes to town to visit)?

Was she testing my decision-making skills? Was she testing me per se?


M37, S5
M-7y; T-8y
Separated 060410
Wife/son moved 022611
Wife serves d-papers 032011
I filed child custody 042012; obtained custody 070312
Bifurcated 103112