:) thank you both for so promptly replying to the list, you were almost faster than I. Just came from the screening of Le Souffle au Coeur with it murmuring in my head. It could also be (the list) Mother, mother, what have you done - so I'm focusing primarily on violence (of extreme love) in the relation mother-son. I'll try to see the films you suggested - the heat of August (when it comes) will be timely.
how about Psycho? Sansho the Bailiff maybe? Mother (Pudovkin)
Bertolucci's La luna is perfect and perfect for this list :)