Arana

I don't think that's the case. As she said to her granddaughter that wisdom comes with the years, but that turns you into a coward.That's why I believe she was too afraid to go back. I think she was scared to find out that he abandoned her or was waiting for so long, or something else happend to him, and that's why she kept postponing. And the more she postponed the more afraid she got. As you saw her doubting to enter the room, you also saw her anxiety. So that's why I think it's a very natural and realistic ending.

I completely agree!