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I thank you for your kindness and sympathy.
I heard other people had longer suffering but thete are also who manage to go longer and did not have to suffer a lot. Maybe it is also bad luck

Yes, everybody's reaction to Cancer is different. Some from discovery to passing away is only a few months, while some took years. The important thing is to have as little suffering as possible.
I hope you are not taking it too badly. We all have to go at some point. Death is the other end of being born. Take care!