Maybe you should see "Play Misty for me" because it was probably the first psycho-female parts and work your way up to "Fatal Attraction."
Try Don't Bother to Knock with Marilyn Monroe.
Swing away, Merrill.Merrill, swing away

I am not trying to be terrible here, but you seem very young because it is very obvious why Martha was treating Helen that way. The Martha character is a manipulating, cunning, psychopathic control freak who hurts, maims, kills anyone who says "no" to her. She is the archetype "monster-in-law." And I am not talking about the comedy with Jen Lopez and Jane Fonda.
Maybe you should see "Play Misty for me" because it was probably the first psycho-female parts and work your way up to "Fatal Attraction."
Noooo! The film is stupid! The script doesn't make any sense! The actors are stupid too! Why doesn't she just kill them all right away? That's what I would do! The director is stupid too! Everyone is stupid except me! Cause I'm twelve and you all suck!

I am not trying to be terrible here, but you seem very young because it is very obvious why Martha was treating Helen that way. The Martha character is a manipulating, cunning, psychopathic control freak who hurts, maims, kills anyone who says "no" to her. She is the archetype "monster-in-law." And I am not talking about the comedy with Jen Lopez and Jane Fonda.
Maybe you should see "Play Misty for me" because it was probably the first psycho-female parts and work your way up to "Fatal Attraction."

She is crazy and lonely. She feels that her son is all she has and is jealous of helen.

Martha is a control freak and psychotic.