A teenage girl from Cwmbran, Wales, who beat cancer twice, died on Saturday, March 12.

The news of 18-year-old Emily Clark's death came after being able to raise thousands for cancer charities and just months after celebrating a year of remission.

Death Details

On Saturday, Emily's mother Donna Dunn tweeted that her beautiful, inspirational daughter passed away.

"She remained free of cancer and in control until the end," she writes.

Dunn said Emily had been admitted at the hospital for about a month. Emily had problems with her breathing because her lungs were said to be filled with fluid.

Just last week, Emily developed 14 complications and was able to eliminate five. With this, the family thought that Emily was getting better.

The night before Emily passed, however, the doctors said that they were starting to run out of options for Emily's condition, but they were doing the best that they could.

At 3:45 a.m. on Saturday, the hospital called to say that Emily was in slight distress. Dunn came to her daughter within just five minutes. Emily's siblings, aged six, 11 and 17, also went to the hospital to see their sister and spent two minutes with her.

Dunn and Emily's stepfather, Andrew, stayed with their daughter until the very end.

Emily's Blog And Help For Charities

Emily started a blog called "Remission Possible" and has then raised thousands of money for cancer charities.

In her most recent blog entry posted on New Year's Eve, she was seen holding a sign that reads "One Year Cancer Free!"

She also wrote that she knew about the difficulties of 2015, but she embraced it with joy, keeping in mind that the chemotherapy had worked. She had feelings of hope and nervousness at the same time, as she takes on what was yet to come.

She was happy to close 2015 and wrote that she will look back on that year as a dark time, but she still remains happy, as always.

Emily's Studies And Medical Career Dream

Emily may have been diagnosed with aggressive non-Hodgkin Lymphoma at a young age, but that did not stop her from continuing her studies.

She was enrolled in an access course for her science degree at the University of South Wales. She would try to get as much school days as possible, even after she loses her hair in chemotherapy.

Emily wanted a medical career at the University Hospital of Wales, which also helped her with her studies. Dunn says Emily wanted a career in the field of medicine to help other people with the same disease as hers.

Emily received a conditional offer from the University of Leicester for a Medicinal Microbiology program. However, the letter did not reach her until after her death.

Tributes For Emily Keep Pouting In

Emily's friends and supporters expressed grief and paid tribute to the "perfect daughter."

A girl named Alexa Elliot said that Emily was the reason why she joined the bone marrow register. She described Emily as a brave girl and her death as a sad loss.

The former mayor of Newport, South Wales, Cllr Matthew Evans recalls that he first met Emily's family during a visit at the Teenage Cancer Trust.

He witnessed how Emily spoke in front of hundreds of people in a charity dinner event. He describes Emily as very inspirational and looked like a professional in her 40s because the entire audience was shedding tears.

He offers his deepest sympathy for the family and described the event heartbreaking, and cancer so cruel.

Even "West End" actress Caroline Sheen, cousin of Hollywood actor Michael Sheen found the news devastating.

She first met Emily in 2014 where she made a speech without any notes, just pure charisma, passion and confidence.

Sheen was so moved by Emily's speech that she ended up performing at a fundraising concert for the charity Bloodwise. The concert tickets were all sold out and the charity was able to raise £4,260 (about $6,127).

She extends her heart to the family and said that Emily's amazing tenacity is a tribute to them.