My explanation

I believe this is a more art-house telling of a film similar to the TCM. Francisca has clearly been predisposed to becoming psychotic, as she recounts always being interested in what people's insides look like from helping her mother, who was a surgeon. After speaking with the locked up salesman, before cutting his vocal chords out, he tells her that killing people feels amazing. This intensifies her curiosity and is a catalyst for her short killing spree. I don't get her idealization with her mother and killing in her mother's favor, but I liken it to Norman Bates, almost, which ties in again to the TCM franchise (Both Bates and Leatherface were inspired by real life serial killer Ed Gein). On par with Gein, Francisca is also a cannibal and grew up on a farm. There are so many little homages to earlier horror films of the same sub-genre, and I think this film tells that story in a more psychological way. Growing up in the isolated country, it's almost as if Francisca knows nothing of the outside world, and has not interacted enough with strangers to understand how to build healthy interpersonal relationships. When she steals the baby, she wants a chance at a somewhat normal life, starting a family of her own. This is a unique perspective into a serial killer's life. Plain and simple. Not traditionally told, either, which is somewhat refreshing, but I can understand people's frustrations with the unclear structure and the abrupt ending.

Meep 😶