Just found out my wife has a brain tumour and a brain aneurism

My wife’s little brother passed away a year ago .. from a brain aneurism.. my wife has been sick for 13 years now with many many different kinds of illnesses..After her little brother passed away and her real dad had also passed away from the same thing , we decided to go get her checked. since she suffers from severe headaches and pains like a ice pack is being shoved into her brain. This woman is the strongest, kindest, smartest most beautiful woman I’ve ever met..we have been together for 13 years so I have seen everything she has gone through. It amazes me every day how strong this woman is.  it kills me every day that she must go through all of this hell.. and I’m scared that it’s going to be like what her mothers fate was with her husband and I’m going  to wake up to my beautiful wife dead beside me. Sometimes she is scared to go to sleep at night because that is how her dad passed in his sleep.. how are you supposed to comfort someone that is scared for their life in that way.. I just wish I could reach inside her and fix her!!  when her dad passed away she went through a lot and I can’t imagine our son having to deal with the same thing