Hi, this is my first AIBU so please be kind! :)
I leant my friend my cake pan as she wanted to make a birthday cake for a mutual friend. When it was returned, the cake had clearly been cut in the pan as there were numerous scratches from the edge to the centre. It was non stick, but obviously now ruined by scratches. I know it isn't a huge item but I don't have a great amount of money and I'd only bought it to make a cake for someone else in the past.
Would I be unreasonable to ask for her to replace it, or does that seem petty over a cake pan?