Just to put my mind at ease here, her "In the Basement" set, the only ones I can find online are 51 images long, and ends with her over the barrel, but my tiny brain is either playing tricks on me or that is actually the complete set because I'm sure I've seen a few images after that where she kicks him over after he's finished in her ass and on her back, get's dressed and leaves, either that or there were alternate angles.
It feels like that weird brain trick where everyone thinks Sinbad played in that movie that doesn't exist.
The brain trick you're talking about is the Mandela effect, named after the fact that everyone thought that Nelson Mandela died in prison before he (actually) died.
"In the Basement" is not an image set, though I'm pretty sure you mean "No Escape." As far as the images you're speaking of, I have no memory of them existing. The official count of images in the set is 52 images long, and I have 52 images in my personal library. I think the online galleries you're talking about are missing the cover page?
The only images of Miriam fighting against monsters are in Below the City 1 and in No Escape, under different circumstances than what you described.
In Below the City 1 she frees Gisela from the monsters only to be captured herself, and Gisela is the one that gets dressed and leaves.
In No Escape, early on in the image set she gets pinned to the ground and penetrated by the first monster, only to kick him and try to escape, only to be caught by monster #2 (hence the namesake No Escape). It wouldn't make much sense to have a similar scene twice in one image set, and not fitting to the set's name if she were to escape in the end.
Both scenes have the same monsters. Don't care enough to learn the monsters' names and don't care enough to look up what they are. I've attached the scenes to this post. Were these the images you were thinking of?