This is not necessarily an uncommon attitude among the followers of the WT movement, even those relatively well educated in secular disciplines of study. I am not exactly sure of all the possible reasons involved in why this has become so, but there are several sites out in e-space that have contrived to investigate this phenomenon.
It is possible that a person with no firm theological convictions, or Christian beliefs, such as I was, do indeed, for various reasons become fascinated with the entire mecanism of the WTS belief system, and are willing to abdicate all spiritual responsibilites to the leadership, possibly in some vague belief that the WTS, simply on the basis of its use of the tri-syllabic word "jehover" has an infallible grip on these matters.
The perception among all in the R&F, as was in my case, is that the WTS leadership is a sort of totemic unit devoted to nothing else but a constant peering into Bible matters, attempting, by some alchemy, to divine its many secrets. Such an attitude is, no doubt, tacitly encouraged not just by the elders in each congreation, but also by the constant, often mesmerizing, effect that interminable meeting attendance encourages. WT study articles are not actually designed to enlighten, but to indulge. They are a sophoritic, lulling the R&F into a sub-conscious acceptance of all its pronouncements, with the resultant degree of lack of dissent becoming entrenched.
As was in my case, I can say, with a certain basis for conviction, that as long as your wife is a constant meeting attender, and remains an undemanding receptacle for WTS influence, she will be unable to be "see" things in an uncritical way.
The WTS leadership is a secretive, manipulative group invested with a mystique that is almost medieval in its character, and being pliant to all their statements is not looked on as being superstitious. As long as she is convinced that the leadership is exclusively a divine spokesman, she will, with equal vigour, oppose anything that assails that conviction.
She will need some mechanism, some trigger, which will unhinge such a deeply held belief. In my case it was when I became an elder. A WTS follower of the first water, I failed to see any need for a critical analysis of the WT leadership's more demanding impositions, for as long as I was in the R&F. When I became an elder, however, and finding myself in the unenviable position of having to impose the WT diktat on others, I slowly, as if awaking from a deep sleep, began to see the gaping flaws in their make up. Having begun, though in a somewhat imprecise manner, this awareness rapidly accelerated, to become, I believe with the approval of God, a full blown realisation of the futility of WT thinking.
Look for this trigger. In the case of your wife, it may manifest itself in some intellectual, or even sociological, dilemma, then watch the process snowball.
Cheers