(((Earth Angel))) First, I'm sorry for your own physical problems.
Second, you are not responsible though I'm sure you are feeling that way. As Nik-key said, she would have found a way no matter what. She was obviously in so much pain.
I'm just so sorry for your loss. And I hope you find your way over to this forum because there truly are people who care about you and understand what you are going through.
Much love and hugs for you.