Wife wants me to pay for cousin's school fees.

Hi. I'm married to my wife for about a year now. She is from the Philippines and I met her through Filipina bride tours. She's a very nice woman, indeed. She takes care of me very well and she doesn't spend much for herself. However, there is one thing that is bothering me. She asked me to pay for her cousin's school fees. She says in their culture, they have to help their family members when they're in a bad place. So now she's asking me to pay for the fees. In America, we don't do this. We pay for our own selves and not for extended families. What should I do? I'm willing to pay for the fees but I don't want them to depend on us for their expenses. Please help.