Welcome. I, too, am an atheist with a Christian (Catholic) wife, and when I told her I didn't believe any more she just about freaked out. But she's better about it now, and she's not a strict "We have to go to church every weekend" kind of Catholic but she feels guilty about it if she doesn't go for a while.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.