The missing girl's father filed his response to the complaint made by her mother, Trista Reynolds, at the Cumberland County Courthouse.
Justin DiPietro's attorney, Michael Waxman, said Thursday that DiPietro has never forgotten his daughter.
Ayla Reynolds was just 20 months old when she disappeared. She was in the custody of her father, who said in 2011 that she must have wandered away or been abducted.
Waxman said DiPietro is still upset about what happened.
"Every single day he thinks about this. Every single day upon waking, and it's probably the last thought he has before falling asleep. He desperately frustrated as well," Waxman said.
Trista Reynolds filed a wrongful death lawsuit last year. The paperwork alleges DiPietro did not do all he could to help Ayla when she broke her arm in his custody.
His lawyer said that is not true.
"He wouldn't have allowed his daughter to continue to be in pain. He brought her as soon as he realized he needed to the next day," Waxman said.
Police reports state that blood matching Ayla's DNA was found in multiple places in DiPietro's Waterville home, including her bedroom and DiPietro's bedroom.
Waxman said that the DNA was from when Ayla was sick.
"Apparently, it's not uncommon that if a child or a person is vomiting repeatedly for some blood to be in the vomit. That's the only explanation I'm aware of," he said.
He said DiPietro also wants answers about what happened but that there might not be any.
"The fact that he doesn't have the answers she seeks doesn't mean that he is guilty of causing his child's death," Waxman said.
Efforts to reach Trista Reynolds and her family for comment were not successful Thursday.