Pigs!

 (imdb)

PIGS-1973-A woman named Lynn (Toni Lawrence) kills her father after he rapes her. She's committed to a mental hospital. While a doctor and nurse are having sex, she somehow gets out of her padded cell and escapes. While she wanders around, a pig farmer named Zambrini (Toni's dad Marc who also wrote, produced and directed) is feeding people to his pigs. Sheriff Tom (Jesse Vint) investigates when townsfolk go missing. Lynn goes to work in Zambrini's diner. When a doctor from her hospital comes to take her back, she kills him. 

Terribly made regional horror film with some of darkest filmed scenes ever (even in the daytime). Do it all veteran character actor Lawrence had to take out a second mortgage to finish the film. Aka DADDY'S LITTLE DARLING.

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