A heath ledger question..?

well i watched an interview about Heath talking that he doesn't care about dying, because it's like he's living in his daughter Matilda... and then he said he would like to live to be with her... and that was a few weeks before his death... i think that he told mary-kate his problems.. and that she gave him the drugs..and that it was suicide... And the housekeeper!!! i mean who the hell would call Mary-Kate first? if they weren't shocked that heath was unconscious?