Helen (2009)

Helen has it all: friends, an attentive second husband, a cheerful teen daughter, musical talent, and a university teaching job.

Then, something's amiss: is her husband cheating, does she have a fatal disease, does her past haunt her? There's a quick hospitalization, a disclosure, a bond with one of her students, Mathilde, and a dark chasm that seems to be opening in front of her: can Helen do anything about the problem she won't discuss, or will it swallow her?