Search Results: my friend is a liar

So... I was going to go to her party because I'm her sister BUT I didn't want to go because I'm a NON drinker and she wants to go out drinking.
So I told her I can't go because we are moving that day, but turns out we are NOT moving that day, but the week after, so I told her aw well too bad because I already sold the tickets. So she BOUGHT me tickets and said I can pay her back. I said... OK.
THEN I told her I can't stay with her and her friends in the same hotel room so I booked a hotel room for 200$, I am not sure if it is refundable (because they will go drinking until who knows when and to clubs and bars where I don't want to go).
THEN she tells me that she doesn't want to take me back to the airport the next day because she wants to spend time with her friends, I guess she told me to get a UBER or taxi and we are going to be THREE hours from the airport where she bought my plane ticket... so I won't have a car. I'm shit out of luck if I went and she ditched me like that.

I guess if I refuse to go then I owe her 160 for the plane tickets and 200 for the hotel stay (or I can call the cancel the hotel and tell her I refuse to pay for the plane tickets but that's mean).

The thing is my sister is knows to ONLY care about her feelings and I must do what she says I should do or else she will be MAD and disown me and treat me like SHIT. She is the type to steal someone else's husband, cheat on him after having his kid, lie to the next guy that she wants to marry him and cheat on him and bad mouth all her exes... so what should I do here? My dad and brother disowns her because she is a manipulative, compulsive liar who is full of herself (narcissist) and they can't trust her for SHIT.

Yes go to her party? No don't go?

take note that I live 17 hours drive from her, I have my own full time gig as a stay at home mom (very little non-school age kids) and we are in the process of moving...