Please explain Dany's dreams and why does Estina talk to him in his dreams, from "Night Talkers"?

Estina speaks to Dany in his dream, the one in which he
tells her about Bienaimé’s having murdered his parents. As the moral force in Dany’s
dream, Estina’s interest is in making it possible for Dany to continue living, and to
withdraw from the cycle of violence that had previously touched the family. And so
Dany’s dream response is this: "Perhaps it was the dread of being wrong, of harming the
wrong man, of making the wrong woman a widow and the wrong child an orphan"
(

paragraph 131). His feeling about doing no
harm to Bienaimé is actually the feeling that he wishes Bienaimé had held about his
parents.