The elf:
This woman would look every bit normal for an elf.  Average height for an elf - Short in stature for a human - with pointed ears, long blonde locks, and softly sunkissed skin, she'd most likelybe a sun elf.  Her body was gifted with curves, large milk-filled breasts heavy for an elf, a plump swell for her rear, an all together delightful form differing from most elves.  

She spoke in gruff, halting Common, though she seemed to understand it well enough, looking out of place in a city compared to the wilds.

The curse:
Though she had no (current) marks on her body that would suggest anything amiss, this woman was cursed to be intensely fertile to anything and everything, and to have incredibly short duration pregnancies.  When aroused, she seemed to do everything she could to satisfy this curse.


Lights/ERP themes:
Most anything goes, really.  Breeding, obviously, with intentional breeding with dirty, filthy talk being fun.  Exotic cocks and creatures, tentacles, etc.  Intentionally not giving her what she wants (anal, oral, finishing outside, etc).  Being treated like an object.  Daddy roulette.  Double/Triple/More pen in one or more holes.  Gaping/Hole ruining.

Preference for anything with a cock.  She'd lay with another woman, but in those cases she's likely to grow her own knotty member and treat them as badly as she's usually treated.

Not interested in scat, or in snuff.  Not really interested in rape, but she's usually pretty ready to go.