Hey, how do you make someone stfu?

My sister, she's the noisiest bitch in the house. She overreacts, cries a lot when she doesn't get what she wants, I often pity her but she doesn't realize how annoying she's started to become.
I threaten to slap her if she doesn't close her mouth and no matter how many times I tell her to stfu, she would never stop whining. I keep telling her that people would start to find her annoyingg instead of helping out with her problems if she didn't knew how to shut the hell up.
That stupid fucking bitch, she's one of the main reasons why I don't want to live in this house anymore. She drives me nuts, I want to punch her face ffs.
But of course, me being the elder sister can't do that because that's wrong. I want to sew her loud, big mouth and push her off the balcony, and rip her jaw off.
And no, I can't do that. Because that's wrong and I don't want to act on it if someone is part of the reasons I become stressed.
I would personally help her sometines but that bitch... she can't S H U T U P

So, main question: Is there any ways to make someone realize they are THAT fucking annoying and to make them not complain things all the time?