What would you have done?

I'm generally not offended by what people say, I usually chalk it up to "everyone is entitled to their own opinion" or "it's ok to have differences, etc" - well my husband and I aren't super religious, however we have our beliefs and yesterday my SIL said to my husband and I that, "maybe if we believed in God more he would give us a baby" I was completely beside myself. Not only because she's the biggest hypocrite I know, but because I don't believe religion has anything to do with being able to conceive, whether your Christian, Catholic, Buddhist, or any other religion. I just can't not believe she said that to us!