Anna could see dead people too
I've seen this movie more times than I can count but just recently I watched it again on blu-ray the other night and came to a rather interesting conclusion: does anyone think there's enough evidence to suggest that Anna was capable of seeing dead people too?
For one, the most obvious example is in the opening and closing scenes, where Anna breathes and her breath is visible. In the first, she even complains about it being cold. Also notice she thoroughly looks for a bottle and begins to look at it but gets distracted by something she can only here, than just grabs it out of panic and runs back up the stairs
Let's not forget to mention her surprise when she finds out who Vincent Gray is, her face is shocked as if to say, "wait, he's the one that saw dead people"
However, notice also the way she behaves throughout the movie. So maybe she was capable of seeing Malcolm, but she couldn't bear to see the ghost of her own husband. In the scene where he visits her at the Italian restaurant Malcolm tells her "I thought you mant the other Italian restaurant you asked me to marry me in" as if she wanted him to be there, even if she knew he couldn't eat because nobody else (except Cole but that's a different story) could see him. Also at the end she has then basement office covered up with books because she just wants closure and to move on
Speaking of which, the end scene. She sees Malcolm but this time wanting closure she asks "why did you leave me?" As if to ask "why did you have to die". It could be more than that though, why did he let the fact that he failed one kid make him want to let go and die. She's not upset that one kid failed him, she's upset that he did that over one kid, even if it meant that living would make it so his career is ruined. So she decides to hear Malcolm one more time and bid him farewell. She has closure now, says goodbye to him moves on
Just my take on the matter
I will plant a f--king palm tree in your neck and f--k you f--king gently in its shade!