I'm gonna side with your wife on this one. The eclectic mix of photos, while individually very nice, does not really show a cohesive point of view. Sure, it shows range, which I am sure you were looking for, but I don't see much depth....at least as far as message goes.
The eclectic mix tells people you have really nice pictures, but a more edited and thought-out grouping says something about YOU, as a photographer. The former is great if you're trying to start a photography business and want to show your abilities, but the latter is best if you are trying to reveal something about yourself as an artist.