This night elf seems, similar to Amywiel, a member of the sisters who died not long ago.

She follow Sehanine Moonbow.

May was half dead, her mind trapped by ilithids. her soul went on praying while her body was not underher control. Sehanine let her be free, knowing she bring goodness to where ever she will come. Not long after amywiel's death, her soul went to sehanine, for a second chance, sehanine granted her wish, and let her communicate with May. May's soul accepted amywiel wish, not knowing in conciously. And so, May bears amywiel's thought.

Another problem arised with may's memory. As she started share amy's thought, thier memory got combined as well, and so, she share some of amy's knowledge (faces, places, etc.) for that reason, her true history is shrouded by mystery.