Mother-of-three preschool teacher, 34, dies suddenly after complaining about a severe headache: 'It was totally unexpected'

A single mother-of-three and preschool teacher has unexpectedly died at the age of 34 after a headache turned deadly.

Robin Nelson of Detroit Lakes, Minnesota was in her second year with the Boys & Girls Club when she started complaining of a severe headache.

Nelson's mother Angie Elaleu said her daughter went to hospital where doctors did tests that uncovered something sinister. 

'When they did the CT scan, it showed a massive brain bleed,' she told local news station KVLY.

'The doctor said 'your daughter is very sick and we need to get her to Fargo as soon as possible.' We lost her. It was totally unexpected.'

Nelson suffered from a brain bleed on March 17 and died three days later, according to the fundraiser created by her family.

Robin Nelson unexpectedly died at 34 when what she thought was a headache turned deadly

She was a single mother of three and in her second year as a pre-school teacher at Boys & Girls Club

Angie and Ken Elaleu (pictured) took the local news station around their late daughter's classroom a month after her death, still in shock from Robin's passing

The cause of the brain bleed is still unclear.

Angie and her husband, Robin's father, Ken Elaleu took the local news station around their late daughter's classroom a month after her death.

'The kids still ask where Miss Robin is,' Angie said.

They said they're still in shock. 

'You can see splashes of Robin everywhere in here,' Angie said. 'Robin's rainbows are the kids, her little students. Robin was like a rainbow.'

Nelson is survived by her three children, aged 13, 10 and 6, according to the fundraiser. 

Her children are being cared for by their family as they navigate life without their mother.

The late pre-school teacher was an organ donor, and in her death, she saved the lives of other. 

'She saved a 21-year-old gentleman with her heart, pancreas and liver,' her mother said. 

'Two other gentlemen each got one of her kidneys, and a 59-year-old man got her lungs.'

'The kids still ask where Miss Robin is,' Angie told KVLY (Pictured: Robin Nelson)

'Her greatest love...was for her family,' Robin's obituary read (Pictured: Robin and her three children)

The late pre-school teacher (pictured) was an organ donor, and in her death, she saved the lives of other

Her funeral was held at the Boys & Girls Club on March 28, where several of her former students spoke of their fond memories with their beloved teacher.

'Robin loved the lake and being at the beach. She enjoyed shopping and being around people. Her greatest love, however, was for her family. She will be sadly missed,' her obituary read.

If you would like to donate to the fundraiser, click here.