So of course a good conversation has to set the base for this. But sometimes your wife needs a little bit more than just waiting for "something to happen naturally." Finding good options an presenting her with that is a good route to go and figuring out how to go about presenting those options is a fast track way to get it done. i'm not suggesting anything done without consent but finding situations where she is more apt to go for it can really help.
As a bull I've done all of these at some point or another. I don't post them on a public forum as they too often get stolen. But I'm open to discussion and ideas for more or private conversations about specifics.