Copyright 2018 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Carla Stephaniak was reported missing. Family photos 
 
 RIVERVIEW, Fla. (WFLA) - A Riverview family is desperate to find a loved one who vanished during a birthday trip to Costa Rica. 
 
 Carla Stefaniak, 36, was supposed to fly home from her trip to Costa Rica on her birthday, Nov. 28, but she never made it. 
 
 Stefaniak and her sister-in-law April Antonieta, of Riverview, had flown to Costa Rica to celebrate Stefaniak’s birthday. They visited a lot of places in Costa Rica and had a great time. 
 
 Antonieta had to fly home one day earlier than Stefaniak on Nov. 27. 
 
 Antonieta told WFLA.com that Stefaniak drove her to the airport and dropped her off. Stefaniak then returned their rental car. An Uber driver picked up Stefaniak and took her to the Airbnb she was staying at. 
 
 Antonieta said she and Stefaniak continued to communicate with each other while Antonieta waited for her flight at the airport. 
 
 The Uber driver took Stefaniak to her Airbnb and offered to give her a 1-hour tour of San Jose. She accepted and went on the tour about an hour later. 
 
 Stefaniak continued to communicate with Antonieta during this time. 
 
 Stefaniak returned from the tour and was dropped off at her Airbnb. She communicated with Antonieta and said it was raining really hard and the power had gone out. That was the last time Antonieta heard from her sister-in-law. 
 
 Stefaniak was supposed to get on a plane to fly home to Miami at 1 p.m. the next day, Nov. 28. 
 
 But, that never happened. 
 
 Antonieta said she initially wasn't worried when she did not hear from Stefaniak that morning, she thought her sister-in-law may have slept in. 
 
 But that wasn’t the case. 
 
 "She totally went missing, ghosted on her birthday, which is totally unlike her," said Antonieta adding that Stefaniak’s social media accounts have gone silent, which is very unusual. 
 
 Antonieta said she has contacted the Miami FBI, the US Embassy and Senator Marco Rubio’s office about Stefaniak’s disappearance. 
 
 Antonieta has also created a flyer that is being shared on social media with the hashtag #FindingCarla. A GoFundMe page has been created to help pay for a trip to Costa Rica to search for Stefaniak . 
 
 Antonieta said her husband and a friend flew to Costa Rica this morning to search for Stefaniak. 
 
 She did not go. 
 
 “I’m scared of what I’m going to find,” she said. 
 
 Antonieta said her sister-in-law lived in Tampa for 12 years. 
 
 Antonieta and her husband live with Stefaniak’s father in Riverview. 
 
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 MIAMI (CBSMiami) – Authorities in Costa Rica have found a body Monday in the area where a South Florida woman had gone missing. 
 
 Costa Rica Judicial Investigative Office spokesperson Marisel Rodriguez tells CBS News that a body has been found partially buried and inside plastic in the area where Miami resident Carla Stefaniak was staying outside of San Jose, Costa Rica. 
 
 Authorities have not identified the body yet and are in contact with Stefaniak’s family who are in Costa Rica in an effort to make an identification. 
 
 One of Stefaniak’s brothers, Mario Caicedo, said he is remaining positive that the body discovered is not his sister. 
 
 “Sincerely, I didn’t feel bad or scared because I have so much positivity and so much faith that it’s not my sister,” Mario said. “We’re just waiting for the confirmation that it isn’t her from the authorities.” 
 
 He has a message for Carla. 
 
 “Come home,” he said, as his eyes welled up. “I miss her. I want to have her close to me. We’re all waiting for her.” 
 
 Earlier story follows: 
 
 The family of a South Florida woman who disappeared during a vacation in Central America is desperately trying to find her. 
 
 Carla Stefaniak, who lives near Miami, went to Costa Rica to celebrate her 36th birthday. Her family says they haven’t heard from her since the night before she was set to return home. The was nearly a week ago. 
 
 During the trip Stefaniak was all smiles, posting multiple videos and photos on social media as she and her sister-in-law April Burton spent a week-long vacation in Costa Rica. 
 
 “It seemed so safe when we were there, everything was great,” said Burton. 
 
 Because of a prior commitment, Burton left Costa Rica on November 27th – the day before Stefaniak was scheduled to fly home. 
 
 Now on her own, Stefaniak took an Uber to her Airbnb and then had her driver give her a tour of San Jose. After returning around 5 p.m., She told a friend it was “raining crazy” and the power was out. She added that “it’s pretty sketchy here.” 
 
 Around 9 p.m. that night, all communication stopped which was highly unusual, according to her brother Carlos Caicedo, who is now assisting in search efforts in Costa Rica. 
 
 “It was her birthday and she loves to be on social media. So I’m guessing every single app that there is that you can communicate, I’m sure she was on it,” he said. 
 
 Caicedo said according to the owner of the Airbnb, a security guard saw his sister get into a car with her bags at 5 a.m. the next morning. 
 
 “Which makes no sense because her flight was at 1:30 p.m. and she was only 20 to 30 minutes away from the airport and she is never early for anything,” said Burton. 
 
 Adding to the mystery, the family said Stefaniak had checked-in online for her flight and ordered an Uber to pick her up later that morning. 
 
 Airbnb had no comment and Uber said it will assist in the investigation. 
 
 Florida Senator Marco Rubio’s office has reached out to assist the family.
– A Florida woman has gone missing in Costa Rica after visiting for her birthday and getting into an unknown car, WFLA reports. Carla Stefaniak, 36, was scheduled to return Wednesday, the day after her fellow traveler/sister-in-law flew back—but Stefaniak never made the plane. "She totally went missing, ghosted on her birthday, which is totally unlike her," says sister-in-law Antonieta, whose last name is reported variously in the media. "I'm scared of what I'm going to find." Now Antonieta's husband, who is Stefaniak's brother, has flown down with a friend to find her. They've talked to security guards, an Uber driver, and Airbnb owners, who say Stefaniak got into an unknown car Wednesday morning, per CBS Miami. According to relatives, Stefaniak dropped off her sister-in-law at the airport Tuesday, returned their rental car, and took an hourlong tour on San Jose in an Uber. That night she texted that rain was pouring and power was intermittent. Her last text: "It's pretty sketchy here," per QCostaRica. Police investigators confirm she left her room with her luggage at about 5am Wednesday morning. Her social media accounts have gone quiet, with her last Instagram post showing her on vacation Monday. Antonieta says she's told the Miami FBI, the US embassy, and Sen. Marco Rubio's office, and set up a GoFundMe page to pay for the search. "She was just such a happy go lucky person," says Antonieta. "I'm just afraid she was just too trusting with someone there."