Just show up Ron,you don't need to say anything [emoji106]
Go quickly and visit while she is still able to communicate.Be strong for her and yourself.
Don't ask her what you can do for her.Tell her that you will take care of everything when she's gone.The less she has to worry about the stronger she will be to deal with the inevitable.
Reminisce about any good times growing up together.Remind her of what she meant to those around her and tell her that while she'll be missed she will never be forgotten.
If for no other reason just be there for comfort and support.