For Galadriel look i recommend use separate prompt, like:
Main prompt: ctblnch woman,head accessory,long hair,wavy hair
Adetailer prompt: ctblnch woman
It's happens because i have small dataset with that concept.
And In general strange result caused by too diverse dataset.
Recommended checkpoints: CyberRealistic Pony, NostraMix, NostraRealisticMix,