The parents said they regularly checked their 14-year-old daughter's Facebook page and saw no signs of bullying, ABC News reported Wednesday.
"I would check her Facebook every time she would get on it," the suspect's mother said.
"If we saw something that was not right, we would've addressed it and it would've ended right then," the girl's father added.
Both parents said they were "sure" their daughter's Facebook account had been hacked.
The parents, who have seven children, described their daughter as "lovable" and "caring."
The 14-year-old and a 12-year-old girl are accused of leading the cyberbullying of Rebecca Sedwick, 12, of Lakeland, until she committed suicide Sept. 9 by jumping from a concrete silo tower.
The couple also were critical of Polk County Sheriff Grady Judd for releasing their daughter's name and photograph on television.
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