I have just got of the phone to the Vet.
Its not good news....Misty has Haemangio Sarcoma, which is a very fast growing tumour

this was in her spleen, which she had taken away prior to these results. This fast growing tumour spreads and goes to the liver etc.... and no treatment has been proven to work
Misty also has Irritable Bowel which can be treated with medicine, which she will start tomorrow.
She is sat minding her own business outside, unaware of anything, she is eating still and loves her cuddles more than ever.
Love, Julie x