Yes, on 3 occassions I have asked her to go out by herself. Once before we went for drinks, the time we actually did go about a month and a half ago and recently for the concert, which she said I shouldn;t go and you know why...to which I said guilt??? Never talked further about that.
Usually, it is the case where I ask her to go with us when I have the kids. She has only gone once and that was recently. Just after Christmas. Haven't said much since then...So, I do try and includethe kids as I also believe that it is the best way to get comfortable.