Strictly speaking, you are correct. Colloquially, not quite. From Merriam Webster:
"Broadly: A similar nonjudicial prohibition against the release of confidential information or against public discussion of a sensitive matter"
Source:
Definition of GAG ORDER
In any way, if you like, just replace "gag order" with "friendly advice from the laywer to shut up", that does not really change anything.
But still, you are misreading - I never said that
she is bound to any advice from the Laundrie's lawyer, but that apparently
ML is advised to not talk to
her.