Wife wants me to spend more time with our daughter?

I have a son who's 10 and a daughter who's 4. My wife says I spend all of my time with our son. well we have a lot in common. we go to the zoo, library, ballpark to hit some balls, the batting cages, basketball games, etc. My daughter likes to play with dolls and her kitchen, etc, plays with her stuffed animals. I work a lot so on my downtime I want to do things that I enjoy so my son and I go and have fun. I have invited our daughter along but she says she wouldn'yt enjoy that stuff. so isn't it her fault? And my wife says I need one on one time with her but I don't want to leave my soin out like that since I'm really close to him and don't want him to get ignored or neglected like my Father neglected me. anyway my wife spends all her time with our daughter and none with our great son. any ideas of what i can do with a 4 year old girl that will be enjoyable for both of us, and how can i make my son feel included