I've discussed religion with her a few times, and it seems that her primary motivation for believing is a conviction that people like her husband know what they're talking about.

True, and since widespread refutation of theism isn't happening (or accepted), there are always Swinburnes, Plantingas, Kreefts, and WLCs to point to.

It might help get her thinking "there are other communities I could be part of if I didn't believe what I believe now."

I actually brought this up last night. She could conceive of it being possible that had she been a different religion, she might be as passionate/convicted of that community compared to the current one, but she couldn't bring herself to do so when I gave an example of a non-religious community with strong rituals and relationships. She said that it would have to be a community with a "purpose outside herself."

...she can take notice of what she would anticipate given her beliefs being true, and then find out whether reality agrees with that.

Yes, probably a better approach than what I attempted.

I was quite surprised to find out what the old testament messianic prophesies actually entail. Not only did Jesus never fulfill most of them even by generous interpretations...

Well, as you stated below, this is neatly sidestepped by the second coming/afterlife. As far as I know, all or most of the things on that list are said to be occurring at the second coming, or more how I have heard it, are fulfilled in heaven.

If you bring this up with your wife, you should wait for a time when she's more receptive to it. It won't make much difference for her to find out if she hasn't already made herself aware that she expects otherwise.

Indeed, or perhaps as nerzhin suggested, I should just refrain from talking about it at all.

Maybe if I pursue the activities in my "Edit/Update" section of the article above, particularly finishing off some of my reading list and writing my "story" out, it will have a greater impact on her than any direct confrontation/dialog. She's stated that she doesn't like all the "atheist blogs" I read and that I'm "unbalanced." Perhaps were I to display willingness to read theological books, it would remove that objection... or it might reveal that the objection wasn't real and that she'll not be happy with my non-belief even if I fulfill such a requirement.