Authorities searching for Nebraska beauty queen Michaela Wells have ruled out foul play in her disappearance, but the 16-year-old’s family clings to the belief that she was abducted.

Michaela, the 2013 USA National Miss Nebraska Teen, was last seen Sunday night at her home, her parents said in a Facebook post Tuesday.

“Hello, yes, our daughter is missing. She vanished while taking out the trash at 8:37pm on Sunday, March 2, 2014. She has now been missing for 39 hours,” read the post.  “She is not dressed for the weather and her cell is still here at home. Her friends are in shock as some of them had just talked to her the afternoon before she vanished to make plans for the week. Please share and help us find her!”

After Michaela didn’t return 20 minutes later, her father drove around Bellevue in hopes of finding her, the Omaha World-Herald reported. Her parents initially thought she went to IHOP Sunday night, but grew increasingly worried when she wasn’t home by Monday morning. They filed a police report at 9 p.m. Monday.

“When she says she's going to step out of the house for a minute, she always comes back in,” Michaela’s mother, Theresa Norris, told the World-Herald. “It's not like Michaela to disappear without telling us.”

Meanwhile, police said there was no evidence indicating Michaela left against her will. Foul play was ruled out in the teenage beauty queen’s disappearance, Omaha Fox affiliate KPTM reported. Authorities are treating the case as a missing juvenile; Omaha ABC affiliate KETV noted that police entered Michaela into a missing persons database on Monday.

“At this time there is no evidence to indicate Michaela left her residence against her own will or that foul play is involved,” Bellevue police spokeswoman Laurie Synowiecki told the World-Herald.

But Michaela’s family disagrees. They said the fact that she hasn’t contacted anyone since her disappearance is a sign that she was taken against her will.

Michaela has been described as white, 5-feet-6-inches tall and weighing 120 pounds. She has brown eyes and brown hair. Anyone with information on the teen beauty queen’s disappearance was urged to call the Bellevue Police Department at 402-293-3100.