I’d be very suspicious, they might well be lying to manipulate your emotions.
Let’s face it, if you have a diagnoses of terminal cancer ( for the sake of argument) there’s little point in “ not telling anyone “ , they will find out very soon anyway. But one good reason for “ keeping it secret “ is that it’s all made up. Then when you don’t die as planned , you can just say
“ gosh I don’t believe that witch Famous, she even told everyone i had cancer, she will stop at nothing “.
One thing you COULD do ( don’t know if people who know a lot about this like Atilla will disagree ) is say that you are prepared to accept a letter from them ( the supposedly ill person ).
So you then could get a letter that says “ I’ve got a diagnoses of X and I’ve got Y months to live. I’m getting chemotherapy at hospital A under doctor B.
“This has made me think about my past and all the bad things I did to you and I want to apologise and make it up to you, I’m so sorry, it was all my fault. I know I don’t deserve anything but please be good enough to come and see me and let me apologise in person “.
Which is what I think you are hoping for . Then you can decide what you want to do next, if you want to meet them. You don’t have to do anything at all, but it might help just to have such a letter.
However I think that’s probably very unlikely. Sorry . If they are lying about being ill, they won’t want to put it in writing. And they won’t want to admit any wrong doing , unless they have totally changed.
You are much more likely to get some version of “ I’m unwell and I demand to see you , it’s my right as an unwell person. “
Or even a letter from another family member that says “ X is ill and demands to see you and you are a selfish bitch if you don’t do what they want . Buts what’s new because you’ve always been a selfish bitch. If they die you will feel bad for the rest of your life “.
Then you will know exactly where you stand and that there’s no point in having any more contact. That it’s all being done to manipulate you.
You could always get someone else to read the letter before you, and then only let you see it if it’s the first type of letter.
I don’t know, that’s just my thoughts. As I said, other who know more might think it’s a bad idea.