I'm sort of in that situation. We could retire right now although I really want to build up a little more cushion, but my wife is not really ready yet. Partly she is not sure we have enough to retire - or rather, she is concerned that she will have to worry about money, like we did when we were first married and relatively poor, even though all our projections show we can support a pretty lavish lifestyle with our retirement savings. Also she is not really ready to quit her job, which she (mostly) enjoys. I think it's just going to take time to get comfortable with the idea, and likely to build up a little more cushion than I think we really need.
So I suggest you start talking to your wife now about it, so she can start getting comfortable with both the financial and emotional sides.