I don't know the exact details here, but if a person is declared the C of S will not allow ANY communcation from the person to any Scientologist in good standing, no matter what the illness or situation may be.
When my ex-wife was dying of breast cancer, and when I was also declared as an SP, they would NOT let me have ANY communcation with her. Not in writing and not in person. My ONLY comm line was with IJC, and his only communciation to me was "get through A-E" if you want to communciate with ANY Scientologists.
These people are IDIOTS. They will ALWAYS be idiots as long as they exactly follow exact LRH policies on such matters.