Ah, yes, the tractor seat. I started with one of those; it was fine for about five miles, and then the chafing started. Thus began my saddle journey, each one with less and less padding, until my ideal saddle turned out to be a Brooks B17 Softened; super comfortable right out of the box and I can ride it forever.

@topher5150, you might want to make sure your wife has a properly sized saddle. Unless she's sitting bolt upright, it's unlikely a super wide saddle will be comfortable for long. Below shows you how to measure. I wish her many happy miles on her bike!