Intergalactic

The thing was dragging Batgirl by her legs, causing her face and tits to bounce off of various surfaces as it quickly traversed a seemingly endless maze of walls, ceilings, and secret passages. She never got a glimpse of what it was, just that it had some sort of cold slimy, and black appendage that it was grabbing onto her with. Suddenly, the movement stopped. Dazed, she glanced around the room she was in.

Remenants of black slime coated the walls. A sort of physical memory of something that used to be there. Small trails of ooze dripping down slowly, places where the wall was a little darker than it should have been. It was fascinating. Batgirl snapped herself out of it. She needed to focus on the mission. What room of the base was this? She looked around, and decided it appeared to be a sort of airlock, seperating one section of the lab from another. That was just great. She was about to be even further away from Jill, with no progress to speak of besides a brief encounter with whatever dragged her here.

Wait, where did it go! Batgirl was so distracted by the room that she lost sight of.....whatever that thing was. She stood up and began walking towards one of the doors heading out of the airlock, which was her biggest mistake. It left her ass and pussy completley open for the Xenomorph that had brought her to ram two tentacles up her tight holes. Stunned, Batgirl looked up to see the black, slimy mess of tentacles and teeth that we all know and love. She didn't dare scream, and alert more monsters to their position. She had already made that mistake once.

It didn't seem like there was anything she could do to stop the much bigger, stronger, and faster beast from fucking her endlessly. Lucky for her, Batgirl knew how to think under pressure. Sometimes, just to practice, Batman used to fuck Batgirl relentlessly while asking her math problems..... that is before she was **** to join the Blue Birds. That training paid off today, with Batgirl being able to look around while tentacles reached a foot deep inside of her and notice a handle labeled "acid cleansing shower". She reached out and pulled the trigger. Some sort of strange, sticky yellow liquid rained down over the pair of them, causing the Alien to start dissolving in areas and melt into a liquified state. She was able to struggle away from the now weakened monster, but she could tell her solution was only temporary, as the creature had already begun to reform.

She saw more pools of black liquid start seeping through the cracks of one of the doors. To her, that was a pretty good sign to run the other way, back towards where she had came from. That was before she heard the screams.
"HEEEELP ME! ARE YOU THEREEEEE! I NEED TO GET OUUUUUUT!" It sounded like a young woman, with the voice coming from the exact opposite direction of the airlock.
Batgirl assumed it was a scientist. She knew she had to help eventually... but then again, Batgirl wasn't sure she was ready for more Xenomorphs after what she just went through. So, Batgirl did the selfish thing and ran out the other door, knowing she would have to come back here eventually.