Just wondering because having her brother living with her is not going to be as easy as she thinks.

Your wife is going through a lot right now - father sick, no dog, brother, her career and affair.

Follow the MB plan and ramp up Plan A. Send friendly emails asking about how the trip with the dog was, glad that the dog remembered her, how you miss the dog, how is her brother, blah, blah, blah.

Pretty soon you can go to Plan B.