Does anyone think... SPOILERS
*****NOTE SPOLIERS*******
I felt unsure about this part of the film, it was certainly significant but it caught me off guard.
When her son dies and she is staring right at him is the idea that she was blinded by love and ultimately she knew that she might be able to see edgar again if they commited her to the asylum, which was what she subconsiencly wanted to come from it.
She says earlier on that she can't be with him because of her son and so if he wasn't there then nothing could stop her.
Does anyone think i'm on the right track or have i missed the point all together?