(NewsNation) — The family of Ana Maria Knezevich Henao, a Florida woman who went missing in Spain three months ago, say they are devastated and speaking to authorities often as they try to find out what happened to her.

Felipe Henao, Knezevich Henao’s brother, said at a news conference Wednesday he has faith in law enforcement as they continue investigating.

“I really want to thank the FBI. They’ve answered all my calls,” Henao said, adding that the U.S. Embassy, Spanish police, and his sister’s friends have assisted as well. “Every day I talked to them, since I’ve learned about this.”

Still, Henao said, this has been incredibly challenging for the family, who has been left “traumatized” by the situation.

“My mom, when I told her what happened, in February, she broke down. I almost had to take her to the hospital. I thought she was going to have a heart attack,” Henao said. “Thankfully my sister-in-law, she’s a nurse. She helped us. And ever since, it’s been this anguish and this desperation to know what’s going on. And that has been terrible. It’s just horrible to go through this. You don’t eat, you don’t sleep. You cannot live your life. It’s terrible.”

Knezevich Henao disappeared in Spain three months ago after going to Madrid amid a divorce. Although she had planned to continue her trip to Barcelona with a friend, she never arrived at the train station. When Spanish authorities searched her apartment, they found no evidence of a robbery.

U.S. authorities recently arrested her estranged husband, David Knezevich, on kidnapping charges in connection to the disappearance of Knezevich Henao.

New court documents show investigators saying they have surveillance video of a man resembling David Knezevich buying spray paint and covering security cameras at Knezevich Henao’s apartment building the day she went missing.

David Knezevich maintains he wasn’t in Spain, but Serbia, when his wife disappeared. However, the documents allege he rented a car and drove from Serbia to Spain and back around the time his wife vanished.

Noting the number of people at the new conference, Felipe Henao said he didn’t expect to see the room “so full.”

“This is because of all the love my sister spreads,” Henao said. “If she’s out there somewhere, I just want to tell her that we all love her. We miss her. We support her. We are her voice.”