Potential renter "injured" during property tour

[Scott Gammenthaler]

Hey BP community, 

Ok, heres the story. While my helper was on your standard rental showing appointment, talking with another interested party, a young woman unlocked the window in one of the bedrooms in the back of the house and the top part of the window slammed down on her fingers. She went to the hospital to treat her finger and it did turn out to be broken. This is apparently resulting in her missing 3 days of work. 

So, I get a call from the father of they young woman, and he/they are asking for $300 in compensation for her having to miss the 3 days of work. And if I don't agree then we will get the lawyers involved. This young woman is only 17 years old (she lied to me over the phone stating she was 18) so that is why her father is involved I presume. 

I do have insurance for these types of things. 

I do realize $300 is an inconsequential amount of money in the big scheme. 

BUT what would you do? Part of me wants to say forget it, pay the $300 and move on down the road. BUT part of me wants to call his bluff and get the lawyers involved.

Thoughts???