At the Devil’s Door is a fairly mediocre horror movie but with an honorable-mention level GU plot. You might think that the first character you meet, a teenage girl, is the Girl Underground, but it’s a bit more complicated. This girl is tricked into letting the devil take over her body, but the adversary hardly stops there.
Fast forward a couple decades, and there’s a real estate agent showing a house, when she sees the first girl in the hallway, and thinks it’s the missing daughter of the house’s owners. After finding out that the girl she’s seen is actually the first girl, the one who supposedly committed suicide in the house in the 80’s, the real estate agent confronts the devil-possessed girl and is killed. Another potential Girl bites the dust.
The real Girl Underground here is the agent’s sister Vera, who begins to uncover the story behind these events. She finds out that Hannah (the first girl) was pregnant when she died, although a virgin. Apparently the devil has been trying to bring forth a supernatural child to inhabit. Vera confronts the devil but is thrown out a window and goes into a coma for eight months, after which she discovers she is about to give birth to a baby. Vera is understandably freaked out, and gives the baby up for adoption.
Six years later, Vera decides to find her daughter, presumably possessed by the devil, and kill her. She confronts the little girl, who technically doesn’t confirm anything but acts creepy enough that you know she’s right. But Vera cannot bring herself to kill her, and so she takes the girl with her instead. This suggests another “girl loses” version of the archetype, which seems to mostly be present in the horror genre.