Sandra - the mystery
As has been mentioned in various threads here, these characters stay with you, live within you. Their pain, their doubt, makes them elemental, endlessly relatable for the thoughtful among us.
When it comes to Sandra, however, I find her character truly unknowable.
She shies away from suitors, preferring the company of her family. She has an earthy beauty yet carries herself in such a way as to hide it from the world. We see her in her bedroom during one phone conversation with Leonard, and it is the bedroom of an innocent, dainty and childlike.
What made her this way? Someone who, by her own admission, fell for Leonard with just one look -- seeing him through the glass as he danced with his mother at the family store. Despite being a learned professional, she strikes me as a little girl at heart, uncomplicated by the vicissitudes of desire, a true romantic waiting for THE CONNECTION.
This purity is both beautiful and terrifying. Maybe it all goes back to her favorite movie being THE SOUND OF MUSIC.