And you are right too, but not because the girl posted things on facebook.
This isn't what got the suit tossed out.
What got the suit tossed out is the parents *telling their kid* when they were bound by a non-disclosure agreement. Specifically: They said they wouldn't tell /anyone/, then told their teenaged daughter.
This is called 'breaking the agreement'. Their daughter's action was how they got /caught/, not what they did wrong.
This isn't what got the suit tossed out.
What got the suit tossed out is the parents *telling their kid* when they were bound by a non-disclosure agreement. Specifically: They said they wouldn't tell /anyone/, then told their teenaged daughter.
This is called 'breaking the agreement'. Their daughter's action was how they got /caught/, not what they did wrong.