Now, I am not an experienced modder, but it looks like making a Gulliver mod is more difficult than Alice. I tried to take the easy method of just removing the clothing meshes and basically have her default naked, no extra action necessary, but I realized now that, when she is wearing her normal uniform, that acts as her body. If I remove it, her torso vanishes, with a few thin skin slivers for arms and breasts leading to floating nipples. This fixes in her event when she would open her shirt and breast crush the house. Using the same method on Alice works totally fine.
Even on just the mosaic front, I am not sure how the previous poster removed it. I could only find the textures for it, which obviously removing just leaves the pink default texture.
I think we would basically need to replace what body she is using for it to work, but I definitely have no idea how I would do that. I Just wanted to try because nothing seemed to be getting done. Originally I was messing with replacing Alice with Gulliver on the previous version, but that proved out of my ability.