Help my Best friend

Today suddenly my beautiful cat Doodles suffered some sort of stroke. Initially Prognosis
was bad. But after they had her for a little bit they think they can save her and that with medication and some procedures she can have a GrGreat quality of life going forward. 

doodles is my best friend and I have to know I did everything I could for her. I wouldn’t do anything that wasn’t doctor recommended or would lead to her having a poor quality life But the vet in one of the best animal hospitals on
Earth thinks there’s a chance a chance. 

My heart is broken I am desperate and need 
help please help if you can.