This keep's happening to me.?

A year ago I wrote on yahoo answer's about my grandmother on my dads side that had ped away. Well now my other grandmother on my moms side is in the hospital cause they believe she had a heart attack. They said she had 94% carbon monoxide in her lungs and only 6% of oxygen in her lungs. Some say they dont believe she will make it this time but she is SUCH a strong woman and she has lived through lung canser, cancer, and many more. I love her and I have such a close bond with her. She is 73 years old by the way. I dont think i will be able to handle it if she is gone. I mean I had a close bond with my other grandmother but not more than this one and I still broke down that time. I cant take it anymore. What am I ganna do?