Yeah, some people are unfortunately like that. But at the end of the day, it's just an opinion, even if it's an irritating one. She can't force you to NOT take them, anyway.

If she doesn't want to respect your POV or your lifestyle choices, that's her decision. Some people are just opinionated and their opinions can't be changed, no matter how much information you provide them to convince them otherwise. So, sometimes it's best to agree to disagree, or to avoid discussions like these altogether (like BirdDancer said). It's also perfectly okay to say something like, "Thanks for your concerns. I will keep that in mind." if she's doing it in front of other people. (And you don't have to "keep it in mind" if you don't want to, but you just say it to end the conversation right then and there.) Or, you can change the subject.