How can I recover deleted Notes from iCloud after accidental deletion?

I am posting from my wife’s phone. She accidentally deleted my notes on ICloud when she wanted to clean up memory. It does not show up on recently deleted notes on ICloud . It’s very important patient notes and data

She is not sure how she deleted it. She did not go through Notes but through “settings” when doing it.

After searching her phone, and not finding anything, I searched the iCloud account but could not find it .

we then erased all the date on her phone and reinstalled a previous back up. The notes still do not show up. I am desperate and my professional

career is in jeopardy without it.

Has Apple may be have a way to trace it? Please help?