Myrtle

What we know

Young girl rescued from locked crate at Old Bonegrinder Windmill (Session 21 @ 00:20:49)
From Barovia Village refugee community in Vallaki (Session 21 @ 00:19:47)
Captured by hag coven alongside Fyodor (Session 21 @ 00:20:49)
Piggybacked out by Saturno (Session 21 @ 00:22:40)
Ireena Kolyana took her and Fyodor to Blue Water Inn (Session 21 @ 01:13:15)

Rescued from hag crate on windmill 3rd floor during Session 21 (Session 21 @ 00:20:49).