It's definitely all in the animation file. It sounds like you're looking for this section:
I'm aware of that section, and mentioned it in my prior post. There's also an obvious error in it from the addition of the "other skirt" where having the check if there are legs that are not a skirt option split between two lines like it is means any leg option will get stopped there (including both skirts), since the ConditionSwitch seems to work by going down the list and stopping at the first true option (at least that's what seems to make sense from the way the code is structured, and looking it up seems to agree with that conclusion). I've tried adding code to set the chaps and mesh pants there, as well as the other personal wetness section, as being able to show wetness. After seeing no results, for the sake of testing I've even gone ahead and tried putting a check to show wetness if she's wearing chaps above the check for if she's wet, which should have it ignore the rest of the checks provided she is wearing chaps (in both sections). Despite this, it has no effect, and she still will only show wetness at wet 2, when the legs clothing is removed, or the upskirt flag is set. This problem extends to dripping sperm, as well as clit piercings, which also refuse to show if the pants are worn, regardless of how I try tweaking the code.
Hence why I've begun to suspect there is some other bit of code that is overriding the settings in the individual animation sections, but I'm not sure where it would be, or why it would have been implemented to begin with.
Edit: Ah, I discovered the problem, and feel somewhat stupid for it. As it turns out, I was correct about there being code elsewhere overriding it, but the actual source of that is I'd made a backup of the animation file before making said changes, and had forgotten that I needed to move it out of the game folder. So my backup animation file was overriding my changes to try and make the drips and piercings work. After moving it out of the folder, things are working as expected.
Edit 2: Got everything working properly and updated the Laura_Animations.rpy file in the scripts.zip on my
earlier post.