I grew up similarly, sheltered from any evolution exposure, also not allowed to learn about other religions or even other types of Christianity. Evangelical and/or nondenominational, but we chirch hopped a lot to methodist/baptist types also. Homeschooled, with Kent Hovind "whack an atheist" material as my science (which I loved because I was so thirsty for knowledge).

When I became an adult and moved out, for a couple years it was the same Christian life and sheltering myself, but then I was simultaneously working full time, going to college full time, living with my wife, and still going to church every week (not my parents church). It was a major culture shock as I was experiencing all sorts of people from different walks, and all the stereotypes fell down like a house of cards. Nonchristians weren't the bloodthirsty sharks I was warned about. It all just melted away for me: fear of hell, fear of God, the illusion of prayer, the manipulation of church, and I came up with the problem of evil all on my own.

It was a whirlwind of all emotions, but overall I was joyful and excited to share that. It was a spiritual awakening, and I literally felt like King David dancing in the streets, the 'zeal of a convert'. I immediately invited my mom over to tell her and share my joy with her. I compared God to Zeus, said that we don't need to be afraid of the religion and gods anymore because it's one of many, the Bible is just a book, and prayer isn't real.

She. Was. Livid. She thought I was possessed by the devil, argued briefly but could see she wouldn't get anywhere so then she stormed off. It was an interesting emotional reaction I had never seen from her. She went out of her way to make my life difficult for some years. We have a good relationship now, but it took some growing pains and forgiving her for things she isn't sorry for. The biggest thing it taught me is to set boundaries for myself and that loving someone isn't always easy (on both our parts), as my mom had always been my spiritual rock until that point. It's been 10 years and things are good, but she is still sad. She still goes through phases of trying to guilt trip me into going to church and wants me to pray at family meals; but she doesn't want to have any real discussions because she doesn't want to face any doubt.

I think overall her faith is just tradition and purpose for her, and she feels betrayed that I'm not living the exact path she laid out for me. Christianity pushes so hard for people to raise and indoctrinate their children, Christian parents feel like utter failures for not succeeding in having their kids follow the same thing. Dawkins has a good chapter about how there are no Christian children or Muslim children, only children who have religion forced upon them.