For something to be that far along is immposible some one made a mistake in her records. For it takes year for it to grow that much.
I knew (or had a hunch) for a few years I had breast Cancer only when I had an unbearable hernia did I mention it and the hernia had to wait for a year. It was 9 cm.
What I feel are signs is wavering energy and decisions. Soon you only do what must be done and the rest is dismissed from the mind.
I pray your sister is able to let go and let those things that will help be able to have a chance.
Some things we have no control over accept keeping the faith by reading scriptures and uplifting works.
Only invited those things in her life that feed and nurture good health.
BUMP
.....Westy......