Have you read the transcript of the message she left for her Mother?
It doesn't read well and she doesn't seem frightened at all, in fact she proves what the majority think that she is a spoiled disrespectful brat, there's no way I would say to my Mother ever that I would shit on her face and if I was afraid of a sociopathic father the chances of it being said would be less, that is abusing her Mother plain and simple.
She is 18 years of age and apparently has a part time job already so working should not be so alien to her, if she is used to wearing expensive clothes and driving a fancy car then they are luxuries and not necessities and should be her own responsibility at the age of 18, I don't think that if she was given a car for her birthday or whatever that it should be taken back though.
Being strict parents doesn't automatically mean they are bad parents, again I refer to a photo posted of her looking happy with alcohol on a table behind her, I don't know the source of the photo but if it's on facebook or whatever that is not something a terrorised kid would do.
The article I read referred to alleged inappropriate kissing by her father so maybe she has referred to it, that is if the media is not printing everything they are told, I honestly don't know but if it turns out to be true then I hope she gets everything she deserves both financially and in terms of justice but if it isn't it is people like her that make it so so difficult for genuine victims to come forward and be believed in cases that aren't slam dunks.
On the subject of abuse in general I agree that there is no "normal" way to TREAT the victims of abuse but as far as I'm concerned there's only one way to get justice legally and that's through law enforcement and subsequent punishment as dictated by law regardless of the persons circumstances.
If this turns out to be true then she should be ashamed of what she is putting he parents through but again it's coming from the newspapers so who knows.
http://www.dailymail.co.uk/news/article-2574966/Spoiled-cheerleader-suing-parents-got-drunk-vodka-home-millionaire-attorney-paying-fees-threw-garbage-claim-mom-dad.html