On Sept. 27, Rob Kardashian, 30, and sister Kylie Jenner, 20, filed a lawsuit against his ex, Blac Chyna, alleging battery, assault, and vandalism. Now, In Touch has learned that Chyna is ready to fight back against these allegations – and expose Kardashian secrets.

Rob and Kylie claim Chyna, 29, deliberately tried to “shakedown” and “extort the Kardashian family for her own monetary gain.” But the lawsuit, with allegations against Blac Chyna her lawyer says, are false, could blow up in the Kardashians’ faces. “She is planning to reveal everything she knows about the Kardashians,” says a source. “Kris Jenner and Kim Kardashian are terrified.”

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In the lawsuit, Rob accuses Chyna of abusing drugs and alcohol, but when they were together “he confided details about his own partying to Chyna,” says the source. Insiders have previously revealed that Rob has abused “opiates and pain pills” a well as “purple drank — a mixture of cough syrup and codeine over the rocks with Sprite,” among other substances.

“She has told the Kardashian camp she wants at least seven figures to make all of this go away, which they could easily pay just to be rid of her,” the source continues.

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