DONT READ IF YOU HAVE NOT FINISHED DUCKTALES 2017 SEASON 1 THERE WILL BE SPOILERS!!! YOUVE BEEN WARNED! Donald had been raising the triplets since his sister died. He didn't know how to be a parent but he couldn't just leave his nephews alone. His uncle Scrooge was no help in the matter he shut out everyone after Della died. Donald knew he had to do his best,so that's exactly what he did. And promised to keep doing as long as he was alive he was going to take care of his family.