Ecos (2006)

After the unexpected death of her husband, Alba (Núria Prim), a young woman, tries to rebuild her life with her daughter. However, when they move at their new home, the child dies in the pool. In an attempt to save her daughter, Alba suffers an accident and is unconscious in the hospital for a while. When she awakes, she learns that she has gone deaf and, when she tries to return to her daily live, she discovers that is able to hear conversations from people who are dead.

Unfortunately the movie Ecos is not yet available on HBO Max.