Last year, I got my SO a Giant Option (that's a hybrid, not an option on another guy!) and she put about 700 km's on it, mostly riding around a nearby park, and some streets they close on Sunday's and holidays. It doesn't sound like much riding, but it's something we can do together, and she gets some exercise and I get a few more k's that way. This year we got a bike trailer for her grandaughter, so hopefully we'll be able to get out even more when the little girl stays with us. That's a great thing you done, Pete. Looking back through some of the older posts, I noticed in a few of them you mentioned your wife as "not a cyclist yet", you must have had ESP.
Good Luck!