Something so extraordinary as a "wife" of Jesus would certainly have merited attention rather than complete silence.
See my reply here: http://www.freerepublic.com/focus/religion/3203535/posts?page=177#177
The Bible is silent on many things that we needn’t know. The NT is silent in many details on the day to day operations of the early church and its exact hierarchy.
Another more striking silence is on how Adam and Eve survived outside of the Garden. Certainly instruction must have been given to them on the rudiments of survival and perhaps much more. They were in dire need of an education from the moment of the Expulsion on.
The Bible is not a one to one map of God’s dealings with man. We know that at some future date all will be revealed, including many mysteries such as this one.