She is entitled to 75% refund.
Explanation:
A refund application Letter is a written formal application for a product or service return.
It is discussed to the trader and should contain basic information concerning the purchase, the reason whether a refund is requested and reimbursement expectations.
Documentation is critical. If the main receipt has also been lost, do not get out of sight-if the purchase has also been produced by credit or debit card, the online account overview page should provide a backup history.