He asked that everybody take one minute out of their days and study the photograph of the suspect and the audio recording of a man saying "down the hill." Find that photo and audio at the bottom of this story.
"We are confident that together, we can bring justice for who's responsible for this horrible crime," Patty said.
It's the little things about Libby that will hurt the family the most.
"It's just natural to holler for them to come to dinner, or in the mornings to get up and get ready for school, then expect them to come through the door after school -- the silence when we don't hear their voice," Patty said.
The day before the two girls went missing, they were doing what they loved: playing catch and working on batting for the upcoming softball season.
Because of their love for softball, a tournament has been organized in their memory.
The overwhelming number of donations has raised the reward to find their killer to more than $200,000. Other donations will go to a newly created scholarship fund in Libby's name and toward building a softball field in memory of the girls.
"So they'll be remembered forever and have something for everyone to enjoy," he said.
"Abby and Libby loved each other. Throughout this tragedy, we have honored their memory by caring for and respecting each other. We respect Libby's family's decision to speak publicly at this time, just as they respected out family's decision not to speak publicly."
Watch Patty's full statement in the video player at the top of the page.
Patty's remarks were the first public statements made by either family since the girls went missing on February 13 and were ultimately found dead the next day.
Libby, 14, and Abby, 13, went missing while hiking near the Monon High Bridge. Their bodies were found less than a mile from where they were last seen alive.
Indiana State Police have released a picture of a suspect, which was taken by Liberty on her cell phone. She also captured a man's voice saying "down the hill." You can listen to that recording below.
Indiana State Police are still encouraging anyone with information on the case, no matter how insignificant, to call the Delphi Homicide Investigation Tip Line at (844) 459-5786 or 1-800-225-5324 (800-Call FBI). Tips can also be emailed to Abbyandlibbytip@cacoshrf.com. Information can be reported anonymously.
The only previous time we've heard from the families of both girls was when they toured the Delphi investigation headquarters last week.