<shaking head> I usually don't reply or get involved too much with entertaining questions of this nature about opinions...CHINOOK...please don't take my reply personally...but this topic seems to have come up a lot in the last month or so--about the 250 NM cross country and the requirements to do it solo or take a non-pilot buddy or kids...etc. I'm by no means the foremost expert at the FAR's, though someday I would like to have a fraction of the knowledge that MIDLIFEFLYER spits out on this site 

 I'll get too my point in a moment...We can all agree or at least a mutual understanding that the FAR's are quite often vague and leave a little room for some interpretation and we could also agree that the FAR's don't always make since to us as pilots....BUT, the requirements for this particular cross country under 61.129 para 4 says you'll have 10 hours of solo flight...which includes: subpara (1) one cross country flight of not less than 300 nm total distance...blah blah blah; and subpara (2) 5 hours in night VFR conditions with 10 takeoffs and landings. 
Why is there such a debate on this topic about whether the kids are in the plane, or the wife (non-pilot), or the neighbors dog. It says SOLO people, plain and simple. I won't bore you with all the specifics of what the FAA defines as SOLO...but perhaps sole occupant of the aircraft will help. I guess what really has ruffled my feathers is that I'm planning my cross country from Anchorage and will be heading up to Fairbanks to do it....unfortunately, it's only 220 something miles straight line distance so I'll have to come up with something else to achieve the 250 by flying further away. I've been told by a few folks to just fly around a little longer or take the longer route...<beating head against the wall>.....WHAT? are you kidding me...fly the longer route. It boggles my mind on what people say/think sometimes. Anyway....sorry about the rant...I just don't get the debate that has gone on in other threads on this same topic, nor do I understand why the confusion as to the meaning. CHINOOK...It's good to hear that your Chief Instructor intervened and that you acknowledged it was wrong to take your wife. 
Sometimes folks would rather waste time arguing about the silliness/sensibility of the regs rather than just simply comply.