After some observation, I realized that her body had become so ill. It was all because I hadn't noticed her before and wanted to alienate her, so her condition became so serious.
Seeing how weak she is now, I feel guilty. She may have caught a cold at first. We are short of doctors and medicines. We just have plenty of food and places to live. For some diseases, there is really no way for others besides me. Now ruby's cold has lasted for a long time. She has been coughing and her throat is red and swollen. Now she can cough and bleed. And her nose has been blocked...