I really don't agree with what the mom did! How could she put that burden on her son!? ヽ(`Д´)ノ
Plus, Why would she willingly put herself in that position if the research is sooo~ important!? No one else but HER is going to do that! So if she dies, it's all over. She could've resumed later, or at least took precautions to protect herself more. (/TДT)/