I sent a request for a burial look up to Cowen funeral home in Lorain Co., Ohio, only to be told no funeral home has records that go back that far. I've searched the cemeteries posted at USGenweb for Lorain Co., as well, and did not find my missing ancestress. does anyone know what I can do to find where she is buried?

Therza Eliza Parker Hudson
b. abt 1810-1815
d. abt 1878+-3 years.
we know she had a son in 1847/8, and by 1850 she was dead.