We had no way of knowing she had breast cancer. I have sympathy for her if that is the case. My ex-Chinese GF, from Chengdu died of breast cancer at 29. She was behaving very erratically and asking me for large sums of cash, 25-55,000 rmb. I told her I would not give her any money unless I knew what it was for. I know now, it was for medical bills. She had used up all the savings from her accountant job. I split up with her in March 2015. I found out in October that year she had died. I did not believe at first, had to verify from several sources including her family.