Cancer is evil

My fiances mother is in the hospital due to the leukiemia.  I dont know what to do but say CANCER IS FUCKING EVIL!!!  I feel bad that he is hurt over this situation.  I always tell him that I am there for him nomatter what.  I would donate blood to save his mother if I have to and if she has the same blood type Im AB positive.  Ill do anything for him because I love him i would risk my own life for him.