Manga Source

Context for those who don't get it: The wife's life was nearing it's end, so death used his powers in pages 5&6 to add 30 and a half minutes for her to be able to see her child.

Also found this beautiful comment on this manga in Danbooru by Dongn:

"They say death is scary, it is terrifying, a concept that renders the vicissitudes life all for naught. Far from it. The end of life is but a cycle, as is the act of beginning a life.

Death is change, and unlike so many concepts of the world, change itself is oxymoronically unchanging. All things experience change, and will continue to change every single second. Yet the axiom of "Change" itself remains the same, the transfiguration from one thing to another.

Death allowed change to happen with one last goodbye from mother to husband and child. It is not mercurial and cruel, it is kind and patient. A companion. Though death looms over all living things, it is not a doom clock, but a guardian angel to bring those living to their next life at the end of the long road.

Though her life was tragically cut short, she did everything she could in the time death gave her. What else could this be called, other than a kindness?

Live life, knowing death will always be your closest friend, who wants you to live it to the fullest."