I don't know if it's what you want, but: using the same prompt terms, and grabbing my favorite in a batch of 20:
1girl, demon woman with bangs and ram horns and wings, holding bloody human heart, solo, sitting with knees up, (full body:0.6), looking at viewer, (dark fantasy theme:1.1) (glowing eyes:1.05), thick lines, flat shading
Negative prompt: low quality, deformed, embedding:negativeXL_D, embedding:unaestheticXL_Sky3.1,
Steps: 20, Sampler: Euler a, CFG scale: 7, Seed: 13, Size: 1024x1024, Model hash: ebf42d1fae, Model: realmixXL_v15, Token merging ratio: 0.5, Version: v1.7.0-270-g04a005f0
I'm guessing that, relative to that, you're looking for something that looks more like a painting?
Looking at civitai, grogmixTURBO, which you're using, seems to typically produce more anime-looking images than you're generating.