Replying...
Intro. Born in Nova Dievodora, Nashatra lived a relatively quiet life in her hometown until she was 20, when she was informed that she was sleepwalking, presumably by the Rose Seekers. She then had to undergo training with the Seekers of the Rose to become fit for the task, presumably meeting Adelaide in the process, who taught her the ins and outs of dreams in the Dream Sphere (?). Little is known about this game's prologue, other than small fragments scattered throughout the various Dream Sphere games. At the age of 24, Nashatra first arrived at Windy Island in a small wooden boat, as can be seen in one of the corners of the island, with the footprints of the cove coming out of it, stopping at the 12th Mansion. From there, she traveled alone to the Dream Sphere (?) while getting used to her sleepwalking duties and her (temporary) life away from the city. In her diary entry, which can be found on a table inside the mansion, she describes Ven Island.

Nashatra - Frozen soul

@Yes, skeleton.