---SPOILER---Vanya' s real mom
Vanya's mom's name is Vera, right?
Her neighbor said she worked the night shift, right?
Wasn't that the name of the nurse who treated the guy who was chasing Vanya that night?
Even though we never really see her other than the very fast shot of her with her patient nor when Vanya finds her...but I think she was Vanya's mother.