Just for your info ;)
beautiful is not an Illustrious tag, it's subjective: does not exist. Woman does not exist (female). 1980's doesn't exist (1980s \(style\), peep show doesn't exist (no idea), victorian era doesn't exist (victorian), edwardian era doesn't exist, erotic doesn't exist (again: subjective, some people find 200kg women with a mustache "erotic"), etc. Your tags are like an alien language to the model.

If you don't use Danbooru, and/or BooruDatasetTagManager, to look for tags that EXIST and describe your image with only those, basically every word in your captions is like a completely new word for the model. When only the trigger should, eventually, be a new word.

You've got to tag booru style for Illustrious, or Pony, or NoobAI. Or your LoRA just cannot work.

1girl, cowboy shot, standing, medium breasts, w arms, holding, mirror, silk, towel, head tilt, closed eyes, light smile, oil painting \(medium\), etc.

This is booru language. Not "beautiful woman".

Good luck with your tests ;)