My partner went to hospital.with a bad back then told she has lung cancer 17th may then passed away on 19th June

Hi I am just so confused my partner was cleared of bladder cancer. Then put of the blue had bloods taken then went into hospital to be told.ypu have a tumour near your spine then oh and lungs and liver. She went into hospital on 7th may past away 19th June. I was with her. I am so so upset the tears are streaming I am.empty unable to accept I saw the love of my life of 33 years.slip.away how and why

How does anyone ever come to terms with something like this I am unable to see anything positive.