Both choices restore her sexuality, the choice is mostly there just for cosmetic preference.Qstion about which option whould be best ether give Dari's looks back or sexuality.
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the 2 choice i only unders topchoice but that only her looks i believe
and bottom option is to i believe restore her sexuality
but i am not sure
who choice what and whats the exact outcome
I think restoring her human appearance might imply she loses some of her unperson powers (extra resilience and super strong sharp teeth), but I think those things won't really matter to the story.