Relisha's mother, Shamika Young, also received about $4,000 about three weeks after the girl's disappearance.
Melissa Wheeler, Relisha's grandmother, said the money on Antonio Wheeler's Facebook page came from cashing two checks, one of which was a Social Security check.
Young said the other check was a tax refund and the $4,000 she received was from a car accident settlement.
On March 1, Relisha's mother left the the girl with Kahlil Tatum, 51, who was a janitor at the homeless shelter where Relisha's family lived. Police issued an Amber Alert and first started searching for the girl March 19 after a counselor at the girl's school noticed her mounting absences.
Police found Kahlil Tatum's wife, Denise Tatum, dead in a hotel room the day after the search for Relisha began.