Hello.
I'm so sorry about what happened to your friends.
At least this great friend whose unfortunate situation you're telling us about is still alive, and there's time for you to share together, support her, make her laugh, and try to make quality time happen in your company and with the help of your other nurse friends.
Great for you to be there for her and, even if it's silent, to be truly there for her.
From the bottom of my heart, all my support for you and a hug through the wind.
If you can, make her smile once in a while, it'll do her good.