I've already posted about how I lost my mum to gist cancer when I was 15 after an 11 year battle.  My dad has got into a new relationship this year with an incredible woman, she is everything I could ask for in my dads partner. I have just found out that she has been diagnosed with cancer,  lymphoma. 
I am speechless , my sister is depressed and suicidal and I am sad and stressed seeing my dad and my sister and I go through this again feels agonising already. I am so hurt and the world is so cruel. I am so done. Just so let down by the world that my family has to face this fate twice. All I want is for her to be okay. 
Has anyone got any kind comforting words , or ways to help me feel faith? Anything to make me feel a shred better than knowing I have to face this pain of not knowing again?