(KRON) -- Eight-year-old twin sisters and their family are "reeling from unimaginable grief" after a double homicide in Walnut Creek, a family friend told KRON4.

The girls' mother, Linlin Guo, and grandmother, Beimin Cheng, were slain inside their home on Kelobra Court on September 18, according to prosecutors.

"Linlin leaves behind 8-year-old twin girls who are now without both their mother and grandmother. This is more than a tragedy. It’s a wake-up call to the silent epidemic of domestic violence. Linlin was a loving mother. Her story deserves to be heard, and her children deserve a secure future," wrote the family friend, Lucy Chen.

A GoFundMe page is raising donations for Guo and Cheng's funerals, as well as living and education expenses to support the twin girls.

Police and prose

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