On July 9, Terrell went to Henry Earl Dinkins' apartment in the 2700 block of East 53rd Street with her half-brother — Dinkins' son — for an overnight stay, Lankford said.
Terrell texted her mother using Dinkins' phone shortly after 9 p.m. to tell her goodnight.
Lankford hasn't heard from her daughter since.
Davenport police named Dinkins, 47, as a person of interest in the girl's disappearance. Authorities said he isn't currently a suspect, but they believe he has information valuable to Terrell's return.
Dinkins was already in police custody for violating sex offender registration requirements after officers searched his home looking for Terrell on Friday, according to Davenport police.
Breasia Terrell: Family, Davenport community searches for missing girl