Responsible for tenants daughter slipping on porch with ice

[Scott Kimminau]

I’ve had 8 properties for close to 10 years and never had an issue so probably lucky maybe. I just received a letter from an attorney in the mail that there was an incident at one of my rental properties where the tenants daughter slipped on ice on the porch and had to call an ambulance and went to the hospital. The letter states to turn it over to my insurance. The tenant does not have rental insurance. I called the tenant because she never told me and asked her about it and she confirmed her daughter slipped and fell. The lease states the tenant is responsible for snow, ice, and lawn so I would think that helps but mainly curious if anyone else has run into a similar situation and what the impacts of the insurance could be after this. 
I’ve contacted my insurance agent and waiting to hear back. Wondering if I need to contact an attorney of my own as well. 
thanks