@The Revolting Man is simply reacting as most people would to having read your account: the safest place for you to live until she demonstrates otherwise is to assume that she isn't giving you her phone number not just because she's had bad experiences in the past but
because she's not sure she can't be certain she's not going to have a bad experience with you. Talking in church is one thing. Going into the email level of intimacy is another, especially because it ends up being an actual digital
record of what one writes.
I agree with those who have suggested that you orient yourself toward starting off inviting the woman to do something with both you and your wife, and if you're still worried that your wife won't participate and/or be willing to be the one to make the invitation, then you (like I) still have work to do at home.