Suggested weights:
0.65~0.8: For more photorealistic, look and less bound to the ingame details
0.8~1.0: To more easily reproduce all of her details, especially for her lamia form
Her monster form features are tied to the monster_girl and lamia tags, but sometime specifying purple_skin as well might help.
Also the tattoo and black_gloves should now be more ingrained in the lora, but not overfitted, (should be easier to obtain on high lora weight, but can be specified as a tag for lower weights). (It is possible to get the shape of her tattoos identical to the original, but without manually priming it and going with inpaint, it is still not super consistent)
Using the skirt prompt and higher lora weights should help get her skirt closer to the original.
I also suggest using the negative tag symmetry to help reproduce her look (eg tattoo, flower and skirt are totally non-symemtryic), and legs when going for her lamia form (atleast for solo images).