Students, teachers, and community members in Edinburg are rallying around the family of a teacher who suffered a brain aneurysm.

Denise Pineda, a 47-year-old Edinburg Consolidated Independent School District teacher, is set to have an honor walk before undergoing surgery for organ donation on Monday night, her brother Matthew Espinosa said.

A match has already been found for several of her organs, including her heart.

"Even though she's not going to be with us, she's still going to help people from beyond. And that's all she ever wanted to do," Espinosa said.

Pineda was just starting her 25th year of teaching. She taught second grade at Canterbury Elementary in Edinburg and also coached cheerleading.

Espinosa said Pineda had just finished her workday on Thursday when she collapsed while walking to her car.

"Apparently she fell, and threw up. But luckily one of her coworkers saw it, and called the ambulance. They took her, but unfortunately, from my understanding, it was a severe aneurysm, and it was just so severe there was really nothing they could do about it," Espinosa said.

The day before, Espinosa said his sister had been out exercising with her two children.

"They were exercising. If anything, they were exercising even more, and she was on medication, everything. So that's why we're just even more shocked that something like this could happen," Espinosa said.

Over the last few days, people Pineda impacted have been showing up at the hospital to support her family.

The previous evening, her students gathered outside her hospital window. They couldn't go inside, so they sang a song their teacher had taught them.

"It wasn't just the adults, too. It was the children. They wanted to come... they were heartbroken that they couldn't actually go into the room. So... we're going to sing outside her window... It's heartbreaking, and sad, but at the same time, I can't help but smile," Espinosa said.

Espinosa said hundreds of people have come to the hospital since Thursday.

"They filled up the waiting room, and filled up every room. There was a line going outside that the staff really thought that she was a movie star... and they said, 'no, she's just a beloved teacher,'" Espinosa said.

New Horizon Family Nurse Practitioner Anahli Perez did not treat Pineda, but said brain aneurysms can sometimes develop without notice. She said one warning sign of a rupture is a sudden and severe headache.

"They'll say, 'Oh, I had the biggest headache of my life.' When we start to hear that, that's when we're like, 'OK, stop. Let's see what we're going to do,'" Perez said.

Other warning signs can include nausea, vomiting, vision changes, and confusion.

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