I'm going with $25. You aren't very close with them, but you want to send *something.* I'm sure if your cousin's daughter is going to college, the extra money will come in handy. $75 is very excessive. I had an aunt who was very, very close to me give me $100. But I was ALWAYS with her, so it seemed fitting that she would give me that much, but $75 for someone you haven't seen much in the last ten years? Yikes!