That's fine, I just meant that when you buy something with her money, as you did when you paid the locksmith, you should keep a receipt. When my mother was still living at home both she and I had access to her account. I kept receipts for anything I paid for on her behalf - carers, clothes, electrical appliances, vet bills. She took cash out for her shopping and visits to hairdresser etc, obviously I had no receipts for that.
However I would continue to keep an eye on the amount she is withdrawing. My mother was fairly abstemious and would take out regular amounts each week. When I registered the LPA, the bank asked if I wanted her to continue to have access to the account, and I said yes because there was no worrying financial activity. I would have rescinded her access if large amounts started to go missing.
