Officials allege Reshawnda failed to report the discovery of Geanna's remains at her home in Oklahoma City.
They also allege Reshawnda took Geanna's body from her home and took her body to Scott Street Mini Storage, which is owned by Walter Ray Pelfrey, 76.
Pelfrey, 76, faces one count of accessory after the fact and one count of unlawful removal of a body or, in the alternative, desecration of a human corpse.
Authorities allege Pelfrey misled detectives by saying Reshawnda was not using a storage space at the facility when she was.
Pelfrey is also alleged to have instructed employees to clear out the contents of Reshawnda's unit and delete her rental records.
According to a court document, during a recorded phone conversation from the jail, Reshawnda "admitted to her mother she found Geanna in reference to her being dead, but didn't do anything because of her being in a mental health program".
This week, Reshawnda pleaded guilty to the charges and was sentenced to 25 years in prison.