I don't want to contribute to my grandmother's funeral.
Is it because you are broke?
It's not about the money. i just don't want to contribute.
You're also a part of your family. You're supposed to contribute to important events like funeral. You're being selfish.
I'm not going to spend money on it, who cares about a funeral.
It is your family and you should be there to support them. One day you might regret how you acted so it is better to meet obligations than cause drama.