How can I save the relationship with my mother?

I'm 22. My mom and I had all the chances to be best friends, but I don't think we can. We were both baptized Orthodox, but we have very different religious views. For a number of years, my mom has started seeking her spiritual path through various ways. Her intentions are very good, I'm never going to contradict that. I, myself, am not the picture of the perfect Christian, so I'm not giving myself as an example. But I do have one thing that I consider to be a quality, the humility of admitting that I might be wrong and I try not to judge anyone's choices. My mom, on the other hand, is always trying to make me feel like I'm on the wrong path, while she has found the right one. She's giving me her new age books even if I respectfully explained that I don't believe in them. She doesn't have one belief, she has dozens, she only criticizes Christianity for being too rigid. I always try not to upset her and keep my mouth shut, but she offends me and it hurts. I don't know what to do...