Once upon a time there were three sisters. Skikudis, the eldest, Suliss'urn, the middle, and a youngest: the most beautiful, the most delicate and the most twisted. They all hated each other and attempted daily to murder one another in the most nefarious ways...all to please their Matron mother and show their Goddess who was most worthy of Her attention and power. 

The happy ending of this story was that the eldest, Skikdus, turned to worshipping Eilistraee and the youngest found this out. She plotted to have her middle sister and eldest murdered and almost succeeded if it weren't for agents planted deep within the Underdark. 

Suliss'urn and Skikudis escaped to the surface but only after both had been tortured extensively by sister dearest. Suliss'urn had her eyes gouged out by said torture and her sight restored by Eilistraee through Skikudis healing. In their travels, they arrived at RhyDin but were seperated. Suliss'urn arrived at a  human establishment where a hairy, large male named Guthorm Othinnson felt pity on the blind drow and led her to a room. 

The other--other happy ending was that Suliss'urn was recaptured by her little sister, the marks of her stay in the underdark carved into the drows skin. What happened the second time broke the drows mind. She speaks not a word of what happened but will crow proudly about murdering her little sister there.

Stuck in the middle