Karen Marie Moning said this quote

Missing Alina was worse than a terminal illness. At least when you were terminal you knew the pain was going to end eventually. But there was no light at the end of my tunnel. Grief was going to devour me, day into night, night into day, and although I might feel like I was dying from it, might even wish I was, I never would. I was going to have to walk around with a hole in my heart forever. I was going to hurt for my sister until the day I died. If you don't know what I mean or you think I'm being melodramatic, then you've never really loved anyone.