How is Mary-Kate Olsen able to get away with blocking justice?

Well, if you bother to read the whole story, it says that Mary-Kate already told investigators what she knew. So perhaps she's getting sick and tired of everyone running after her with their stupid questions. Heath Ledger was dumb enough to overdose all by himself, end of story. Mary-Kate Olsen wasn't anywhere near him, and she already said she didn't know how he got his drugs. Well, when you take drugs, that's what happens. Sorry. Don't go getting all crabby at someone else just because Heath Ledger did something stupid that resulted in his own death. If people keep asking Mary-kate the same questions over and over and over, eventually that is going to come out as haring her. The officials involved in investigating his death need to get over the fact that the man overdosed and is now dead. Seriously. End of story. I'm sick of hearing about it.