Many of you guys seem to have missed out on what Aqua noticed. Normally, when one thinks of how Sarina was treated, and sees a drunk woman, they think of a deadbeat mother who pays no attention to her family. That was what he had assumed. But when he saw the picture, he realized, "Ah. So this is the type of person who behaves like a normal kind person to those whose existence is convenient to them, but won't hesitate to cut off their own child when they are useless."
If anything, this makes her even worse than what we thought. She's completely remorseless... She probably even tells herself she's a good person. At the time, she probably thought something like "oh well, I'm busy right now, they are taking care of her there at the hospital, I'll go check on Sarina some other time," repeatedly and never blaming herself, but deep down she just stopped loving her own daughter when she realized she would die, and those were just her justifications for not wasting any more time on her.