Priscilla Presley and Riley Keough's Relationships with Lisa Marie Presley's Twin Daughters

Family is paramount. Despite the conflict over the late star's estate,

Priscilla Presley and Riley Keough have maintained a close relationship with Lisa Marie Presley's twin daughters,

Harper and Finley, who are 14 years old.According to a source who spoke exclusively to Us Weekly,

"Riley and Priscilla have relationships with the twins." Priscilla spends time with the girls while Riley picks them up for the day.

The insider claims that Michael Lockwood "wants" his daughters to grow up with their grandmother, 77, and older sister, 33.

They are relatives. Priscilla loves her grandchildren, and Riley loves her sisters, the source adds.

As the trust case progresses, "Michael hopes their relationships develop further and the guardianship situation doesn't cause a rift."