It is the setting of Alzheimer's disease that gives the film its special suspense. It is through the front of the constant foreshadowing, the end just become very moving.
Maude's yearning for her sister is so strong that she can overcome the trouble of the disease, break through the mystery in the broken and chaotic memory, and find the final truth.
Remarkably, the key to the film's eventual success is also her daughter's patient listening to Maud -- it's a seemingly illogical question from Maud that eventually leads her to the burial site.
Review of Elizabeth Is Missing
