Cabinet fell on tenant, now want me to pay for doctor - help!

[Trent Honea]

Tenant called last night.  Kitchen wall cabinet fell when wife was opening it.  I went over there, and two, two-door cabinets were in the floor with a pile of broken stoneware, ceramic mugs, and glasses.  Tenant (the wife) said she was fine repeatedly.  I offered to reimburse for the cost of replacement dishes and come back to add screws to reinforce remaining cabinets.

Tonight, tenant texted me that he does not feel safe with the cabinets.  That I should replace them all since if one fell more could and someone could get hurt.  And also wife has a sore shoulder and some swelling and I should pay for doctor visit.

Cabinets were replaced in 2011, are from Home Depot, and were nailed directly to wall studs in multiple locations.  They are particle-board type and not heavy-duty, but have lasted through 4 or 5 previous tenants without incident.  Also, the part that worries me most, is they were installed by me.

Help, what should I do? Lawyer-up, let insurance deal with them, or what?