@SoulOverCaos I think it's been hinted that everyone in that household was acting according to the writing of the game, but since the MC reincarnated as Penelope, the characters have gained their own free will.
So the Duke, her adoptive brothers, and the maid are not stereotypical villains anymore and they aren't compelled to hate Penelope just because the game forces them to.
Plus Penelope in the game was apparently a spoiled brat who probably tormented the maid at one point too, until the Duke and his sons turned against Penelope allowing the maid to turn the tables on her.
I mean, the entire poking her with needles thing is so weird to begin with...just a poorly written villain in a game.