Looking for the girl who has disappeared while the jog is "atrocious", says mom

As hundreds of people gathered in search of 20-year-old Mollie Tibbetts, who jogged Wednesday night in the rural town of Brooklyn, Iowa, and who has never returned, her mother announced that she was about to "

Laura Calderwood, Tibbetts' mother, told ABC News that there were" no words to describe how you feel when you do not have the same name. " "

Tibbetts, who was the child from the middle of her family, was looking forward to her next year of second graduation at the University of Iowa and she was hopeful [19659002]. such an extrovert, fun, loving, loving life, "said her mother." She was preparing to move into her first apartment. "

Next month, Tibbetts and her boyfriend planned an international trip together.

"She and her boyfriend Dalton were preparing to go to the Dominican Republic in August 2nd to attend the wedding of Dalton's brother," said Calderwood. "As this date approaches, it's as if I was getting closer to me, because I'm thinking of those two people who are getting married and who are also very close to Mollie [It’s] supposed to be the happiest day of their lives 19659003] Tibbetts' boyfriend, Dalton Jack, 20, told ABC News on Monday that he had last seen his girlfriend on Monday, July 16. The next day he was going to Dubuque for a construction company.

He said that Tibbetts stayed home alone and looked at his dogs. running every night, she likes to run when the sun is not down, but it starts to cool, like 6 or 7, "he says. ABC News Monday. "She knows Brooklyn extremely well, better than me and I have lived here all my life."

Jack said that he believed that Tibbetts would have worn both his fitness tracker and his mobile phone when she came out.

"She probably has on her Fitbit because she never removes it, she uses it for the sleep tracker and for all her shopping and everything," he said. "She probably has her cell phone, but it's off or dead and we tried to call her obviously and he goes directly to the voicemail box."

The couple met in high school and have been together for over two years. 19659003] "She is kind, sweet, caring, she will do anything for everyone," says Jack.

Tibbetts went missing on Thursday, July 19th. The sheriff's office said that it's unusual for a person to go missing. "We've had people missing before, but we usually find them the same day or a few days later," Poweshiek County Sheriff Thomas Kriegel told ABC News on Monday. "We've never had one as long as I remember."

In this very close farming community of about 1,500 people, everyone knows everyone, said Kriegel. But the rural area makes the search difficult.

"We are surrounded by fields of corn, corn and soybeans … At present, the corn is probably eight or nine feet tall. every two rows, "he said." It's hard, even overflighting planes have trouble looking in rows of corn. "

The teams searched every road, every ditch and every water near the town, said the sheriff.On Friday, the authorities also conducted a major ground search in the Brooklyn area – and at least 250 people came to the rescue.

, a helicopter and a plane flew over the area, and kayakers searched miles of small rivers on both sides of the city for miles.

Calderwood said her daughter's disappearance "completely shocked the entire community." said she could see the number of victims in her eyes

She remains optimistic and praised the efforts of the forces of order.

The university said that "her thoughts are with the family and friends of Mollie Tibbetts. "The University of Iowa is monitoring the situation and will offer support as needed, "tweeted the school Friday.

Tibbetts is described as having long brown hair and brown eyes. She is 5 feet 2 inches tall and weighs about 120 pounds.

Anyone with information is asked to call the Poweshiek County Sheriff's Office at 641-623-5679.

ABC News Amanda McMaster contributed to this initiative. report.