That's actually a great story. I don't think you should be bummed. Your wife's dog had probably repeated proven to be a good judge of character. We've all heard the stories about dogs judging people and how they're frequently right.

My girl<space>friend has 2 dogs, Belle and Betsy. Belle is scrawny lab wiggle butt, all up in your face, always happy. Betsy is a rescue hound that was abused, very flighty and unlikely to allow you to pet her. I'm very much a dog person/dog whisperer and I kinda take it personal that I can't make that damn dog like me. I know it's just the dog, but still, dammit ...