Assalam alaykum hope you are well!
My teacher always picks on me, recently she blamed me for loosing a business book that she gave me herself to use and now expects me to pay 30 pounds for it.
I hope you can find the right solution for this matter.
wa `alaykum salam,
For finding lost items, even if impossible to find, Shaykh Hisham has taught us from Mawlana Shaykh to recite Surat al-Kawthar, with the intention of the item being found. Insha-Allah she will find the book and absolve you.