>>8082975She may have overcome breast cancer but you, my friend, have overcome the real cancer. A person who only stays with you when they need it and leave you the second other options open up, only thinking of what resources she can gain, is a cancer itself.
If she wasnt a parasite/cancer, she would have left you when she was sick. But she didn't, because she needed you and your resources.
Don't let it consume you. There are good women out there, even if you just got stabbed in the back.