Empathy versus optional suffering?

Ugh. Just heard about a sweet little 4 year girl with a brain tumor and 0% survival rate. I read the blog written by her mother and I’m immediately in tears. Now what? I feel so sad as I’m a mother of 3. Do I just accept this is the 50% of life that just sucks? I hate it.

When I hear these sad stories involving children with cancer, I’m sad for quite awhile and that leads me to question if I’m indulging in “optional suffering”? It doesn’t feel right though to ignore it / pretend it isn’t a reality for some. I am unsure how to coach myself out of this funk, sooner than later if possible? Thanks for your help in advance.