Diane Defenbaugh


August 16, 2015 (Chula Vista) -- A La Mesa mother and daughter were killed Thursday in a head on collision on SR-125 just north of the San Miguel Ranch.

Diane Defenbaugh, 60, and her daughter, Kathryn “Katy” Defenbaugh, 29, both veterinarians, were heading to SeaWorld to celebrate Katy’s 29th birthday, but never made it there.

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