Why aren't you freaking out?

Today in my fourth period, my teacher was absent and we didn't have any assignments, so i pulled out a magazine Bible that I take to school with me. As I was reading in Psalms, one of my friends came up to me, and asked me what I was reading, and I told her I was reading the Bible. She didn't say anything, except every few minutes to make me look at something, like she didn't want me to read the Bible. Until finally she told me that she was agnostic. And I didn't give her some overreacting response, and she sat there like she was waiting on me to freak out. Then she even to asked me why I didn't freak out. I told her that being a Christian wasn't about forcing people to believe in God, cause there is no way I could force her to, that would just push her away. So please pray for her, that I could be a witness to her, and that one day she would get saved. Thank you.