Legally she cannot refuse because you have already extended to her every possible courtesy to settle the matter. The lady should give in because the main reason for you to pay and for her to ask for the money is to repair the damage. Period.
Simply tell her that your gesture is to assure her of total satisfaction for the repair to be done and at the same time to follow your company's protocol when settling accident cases like these.
If she does agree, you will have to make a note for you and her to sign stating the conditions of the agreement, like only your boss will pay and no cash will be accorded to her. This way you will be protected from any further "nuisance" from her hehe.
Ay Women!
