Right after the funeral, the girl went back to her mother’s place looking for the will.
Going through her mothers stuff she finds an old diary. In it, her mother writes about an affair that she had with the milk man, and that she gave birth to a bastard child, named antonio, many many years ago.
As she was putting the diary back in its place, out falls a picture of a man, looking very similar to the guy she had oogled at her mother funeral.
There was a name on it, and that name was, Antonio!
It was then she realised that the guy she feel in love with was actually her half brother.
Full of joy she rushes over to tell her sister about what she had just found out.
She knocks on the door but noone answers, so she opens it anyway and goes in. She hears noises coming from the bed-room and heads for that direction.
She slowly pushes the door open, and it is there she finds her sister in bed with the one she feel in love with, which is now her half brother, toasting to their great success at killing her mother.
She snaps, takes the kebab spikes and rams it to her sisters chest.
Abit long, but hey, you asked.