At the beginning of my marriage problems, my wife wrote: "Have Faith" to me. Its become a sort of catch phrase like an I love you now.
Not feeding you crap here, not intending this to be an attack, only posting with good intentions, because this part is so very hard.
When she said it might take 5-8 years to get back to 100%, I can see how that would hurt, possibly even taking it as meaning she is going to be at 0% until 5-8 year pass. I'm not sure I'd take it that way, rather I'd take it as building up over that course from 25% today to 45% in a few months, 65% around Christmas...as an example. Not 0%-100%.
99% of the time your doing great and the 1% is when you think things go down hill. When your feeling that way, learn to STFU, just analyze it, see if it goes away, see if you can control it, if you cannot then bring it up.
Patience is a hard thing to aquire, and it's one of the things she needs from you.
Most people would walk through hell for their wife. But how many would do so not knowing if their wife would follow them out.
"But's" I know...but... But is just an excuse a justification. If you really know something you should do your best to avoid the but.
Advice, are just words, comes from our good and bad experience, until your experience gives you insight, they'll just be words. When that does happen, hopefully the advice can help you color within the lines you establish for yourself.
Experience is a brutal teacher, but you learn. My God, do you learn. - C.S. Lewis
Life is usually all about how you handle Plan B. - Jack3Beans
Listen without defending; Speak without offending - FaithinAK