I'm not going to my sister's funeral because I don't have money for a cab.
What if your parents give you a ride?
I don't like owing my parents a favor.
You shouldn't miss your sister's funeral. It will be the last time you will see her and you will regret that decision in the future.
I just don't have the money for the ride.
I am quite sure one of your friend's will gladly drive you to the service if you don't want to go with your parents. You need to honor your sister with your presence.