Scent of Missing Iowa Cousins Picked Up By FBI Dogs Near Lake

Elizabeth Collins, 8, and her cousin, 10-year-old Lyric Cook, were last seen Friday, July 13, 2012, around the noon hour riding their bikes in Evansdale, Iowa. (ABC News)

On the morning of Friday, July 13, 8-year old Elizabeth Collins woke up around 6 a.m. when her father Drew left for work and she quickly hopped into her mother Heather's bed.

"She was like, 'It's mommy and Elizabeth time,'" Heather Collins said today in an interview with ABC News.

The two soon fell back asleep holding one another.

Early that afternoon she was gone, vanished with hardly a trace after she and her cousin, 10-year old Lyric Cook, went for a bike ride. Although their bikes and a purse were soon found at Meyers Lake, officials in this small Iowa town have spent five days searching for the girls but come up empty-handed.

When asked this morning whether the investigation was stalled, Black Hawk County Sheriff's Office spokesman Chief Deputy Rick Abben said, "We are. We have nothing more."

ABC News

Elizabeth Collins, 8, and her cousin,... View Full Size

ABC News

Elizabeth Collins, 8, and her cousin, 10-year-old Lyric Cook, were last seen Friday, July 13, 2012, around the noon hour riding their bikes in Evansdale, Iowa.

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Abben confirms bloodhounds brought in by the FBI picked up the girls' scent near the trail where their bicycles were found, but he would not elaborate.

The wait for answers is taking its toll on the girls' families.

"When is this nightmare going to end?" Heather Collins sighed. "I want to wake up to a dream with my daughter there so she can crawl back in her bed."

Lyric's parents are finding the ongoing search just as agonizing.

"It's frustrating not to know. It's frustrating not to be able to put some pieces and some clues together," Misty Morrissey, Lyric's mom, said.

"We talk to a lot of people," she said. "We walk around. We search. I mean, we've been in the woods getting dirty, sweaty, scratched up, so we've done a lot of that and that helps to fill the time."

"There's strength in us being together instead of just one person being alone," said her husband, Daniel Morrissey.

Both sets of parents are convinced the girls have been abducted.

"They were taken, they're not here," Heather Collins said.

Now the families are relying on their faith to see them through this trying time.

"I try not to think the worst. I just pray. If something comes in my mind that I know God would not want in my mind, I just pray and God eases me, puts a peace over me. That's what I do," Heather Collins said. "When I'm starting to get upset, I just pray. I just pray."

Authorities dragged the lake earlier this week, but are now draining it entirely to be completely sure that the girls are not in it.