Momís been wanting me to babysit my sisterís son. She wants me to take care of my nephew every weekend, especially that my sister and her husband go out of town on weekends. I donít feel like doing it since I have tune up games every Saturday for our upcoming off-season volleyball tournament. This is so important for me, and if we lose, my teamís chance to win free tour to any country in Asia will just turn to nothing. For now, this is more important to me. Am I doing the right thing?