Only the rhymes are upbeat

It all came cascading down at the flick of a switch
The penetrating burning water a bitch
The sudden realization of our situation
Began to Torment my vacation
Not again, we've been through this before
I just can't take it anymore
A stinging in my eyes began
As shampoo and tears ran
The cancer is back he said
feels like she is already dead
A lost cause it is
I have already begun to reminisce
But she still forces a smile
Though it only lasts for awhile
The doctor said there is hope
But I think that is just to help us cope
There is no point in false belief
It only causes further grief
And a larger wreath