Wife upset i am an atheist

[Southern Atheist]

So I've been married 7 years and a little over a year ago I became an atheist due to realizing my belief in the Christian god was unfounded. I found the reasons I believed were fallacious or unjustified and after looking for answers and proof that the Christian god actually existed I came to be an atheist. I live in the bible belt and I can count the number of open atheist I've actually met in person on one hand, my wife is the only person I have honestly told that I have come to be an atheist and she is understandably upset as we were both believers when we married although we were never really religious as in we didn't go to church. She doesn't have any good reasons to believe herself I think its more like she's just hopeful there is a god and she wants me to be in heaven with her when we die even though I've told her I don't believe heaven exist. Also she thinks its just more "normal" to believe than not to believe especially around here when 90% of people are Christians. I haven't tried to push her towards atheism at all mainly because her father is deceased and I feel that thinking he is in heaven helps her cope. To sum it up she is very upset and she can't understand why I have become an atheist and I don't feel I can fully explain why I have without seeming to attack her belief even if that's not my intention.

I'm not really asking for opinions on what I should do although I welcome them, just haven't been able to talk about my current situation with anyone and wanted to get it off my chest and wondering if anyone has been in this situation before.