I'm not going to immediately tell my aunt that her sister died.
Why wouldn't you tell her? Do you have a problem with your aunt?
No, but I don't know how to break the news to her.
It's difficult news to share but she should be informed about it soon. You can't hide this kind of thing from a family member.
What's the point anyways? She's just a worse version of my mom and my uncle is a dumbass.
Even if you're not sure she can handle it, someone is going to need to break the news to her. It's not right to hide this especially when she could find out the hard way and take it worse than if you told her.