Not if that person held something over HER.
This person or persons, could be gang related, threatening to harm her parents, brother, etc.
She tells this person ... who perhaps tells another person, that all she wants is the body to be disposed of, never to be found, and it's carried out under the agreement that she never opens her mouth about who helped.
Crazy? Maybe .. but so is everything else in this case.
And who IS this Patrick person who visited her in jail? Perhaps he has something to do with it? Maybe not him directly, but maybe somebody he knows, who knows somebody, etc. ?