I don't want to go to kenya with my girlfriend and her family
Why wouldn't you want to go?
I'm too busy. This would be very inconvenient.
Spending time with your significant other's family can really help build your relationship up. It's an enjoyable time to have fun with family. Have you thought about trying to be more involved in the family?
Nah. I want to stay in America. I should be able to do what I want.
It's your choice, but all I'm saying is that it seems like it'd be a nice vacation and it's nice to spend time away with partners and their family sometimes.