Suphia from That Time I Got Reincarnated as a Slime / Tensei shitara Slime Datta Ken
When I tested it some different checkpoint and LORA's it seemed to work well with this LORA.
LORA weight 0.8 works great, but feel free to adjust the strength to your liking.
The settings for the Pony version can differ from the 1.5 version
Prompts that I usually used:
white shirt, long hair, gray hair, cat ears, blue eyes, necklace, yellow waist cape, detached sleeves, face markings, black miniskirt, (white thighhighs:1.3), cat tail, black gloves