Christina Kipkorir, 34, was sentenced Thursday in Kent County Circuit Court. She faced up to life in prison after earlier entering the plea.
Defense lawyer Richard Hillary said Kipkorir never contested that she stabbed Robert Shields, 67, and his client wasn't surprised by the sentence.
Kipkorir told police that she stabbed Shields in self-defense in June 2012 at Oak Hill Cemetery. A forensic pathologist said Shields had been stabbed 17 times.