My family, though not very fond of going to church, consider themselves catholic. My grandmother is very religious, not the crazy kind, but still. She handed me over a card so I could write something to my cousin who is getting her First Communion. My initial reaction was to flat out refuse it, but she insists and I take it. So here I am thinking if I should write something or not. Although my writing or not writing will likely have no impact on what my cousin's beliefs might one day be (I myself was raised catholic and got my First Communion), I just feel like I am betraying my own views and somewhat endorsing religion, which I frankly consider a plague. However, my not writing may not be taken well by her family or maybe they won't even care, idk, but my grandmother won't be pleased.
What do you think I should do?