My friend tripped and fell against a table and broke another customer's wine glass due to the lady having her purse out in the aisle and the uneven brick surface. Not thinking about it we went back to our table. Shortly, the customer that was at the table whose glass was broken came to our table asking us to make it right. That she wanted us to buy her a glass of wine. Of course we did but now I think the lady was a little bold. What is the correct etiquette? Thanks!!