<human>: Ok, so a quick recap, my parents divorced when I was young, about 7, but it wasn't terribly bitter. I still have contact with both, and it's fairly amicable, they do get on. Despite this, I don't have a good relationship with my family; my parents or my sister; i tend to rely on my friends. This is generally fine, I live a couple hours drive from my parents and my sister currently lives in New Zealand, I'm used to dealing with things by myseif.

Recently (around March) my grandfather (mother's father) was diagnosed with leukaemia. He'd had some funny spells in the past and this may be the reason. Apparently there is  chemo that could treat this but he is very old and has a weak immune system so its uncertain if it would work or even be worth trying. 

I was in London today and saw him while i was nearby. It is so strange seeing someone who was so full of life so... drained in a bed in hospital. I honestly don't know how i can deal with this. My SO (6 years) has been wonderful, she even drove me to the hospital. She has been an absolute rock but this is something that I just don't know how to deal with. We've talked a bit but I just cannot get my feelings out properly. My parents may have had their probelms but I've always had a good relationship with my granparents. I'm feeling rather lost. My SO is saying I should call my mother to talk but I don't know how. Please help.

Can you condense the text into a few key points?
<bot>: My parents splitup when i was young, my grandather has leukeamia, how do i deal with this?