Convince family to let me help others?

Should I try to convince my aunt that one person's Christmas present can make a difference? Every year, my family does a Secret Santa gift exchange. We all draw names out of a hat, and then everyone sends their wish lists out by email. This year, I wrote a letter explaining how in my travels through Latin America I had met people living in dire poverty, and that it had affected me so much that the only thing I wanted for Christmas was a gift that might help such people. I included a link to Heifer International.

I then got an email from an aunt. She said that it was great that I wanted to help others, but we family members don't see each other very often, and Christmas is a time for us to share things with each other and forget about the rest of the world for a little while. She then said, "It's unfortunate, but the world is not going to change with one person's Christmas gift." She asked that I please please please make my Secret Santa happy and let him/her get me a "real" gift.

I can understand my aunt's point of view. My family is not religious or wealthy, and Christmas is basically a time for us to get together, eat yummy food and spoil each other with some gifts. I suspect that asking for a gift like mine might make the others feel guilty about their own wish lists.

Should I stick with my family's traditions? Or should I try to convince my aunt that one person's gift can make a difference?