Tenant requiring some advice please

I am a tenant in a private rental and my landlord is a friend of mine. We have lived in our property for 3 years now. I recently employed a cleaner for about a month or so, she came weekly. On her last time here she had arranged to clean the oven whilst I was out of the house.

She had put newspaper down under the oven to catch any drips and when she lifted the paper the cleaning product had gone through and taken a large chunk of varnish off the floor.

The problem I have is that the whole floor in the kitchen diner would need sanding and varnishing in order to match in. The alternative is to strip the area that she damaged, but would take a good amount of time to match in.

The issue I have is that she says she is only liable for that section which she is prepared to pay for, but my landlord doesn’t want it to be odd and wants the whole thing done which would mean we would have to cover the extra ourselves.

I’m not sure where we stand on this so any info or advice would be much appreciated.

Many thanks.

Steph