( CNN ) -- When she was healthy , Olivia Wise used to sit in front of her locker at school and sing for her friends . She loved learning new things , and she wanted to be a pediatrician . Olivia is just 16 , and she is dying of an inoperable brain tumor . In September , knowing that there was no more treatment available , the Toronto teen went to a recording studio to immortalize her voice -- one that has brought to joy to her family and friends in her short life . She sang Katy Perry 's hit `` Roar . '' In the video made of her recording , she sits meekly in a wheelchair , unable to stand or catch her breath . And then she gets to the first chorus. `` 'Cause I am a champion , and you 're gon na hear me roar . '' Her eyes squint , and a smile stretches across her face . Her joy is infectious . People in the studio begin to dance . As the song goes , Olivia sings , `` I got the eye of a tiger , a fighter , dancing through the fire . '' A few more chords , and the corners of her mouth rise again . `` Olivia is a fighter and has gone through the fire , '' her cousin wrote in the post under the video posting on YouTube . `` In fact , she was going through the fire while she recorded this song , but you would n't know it , because she was dancing right through it . '' That recording was made on September 6 . In the weeks that have followed , Wise 's condition has deteriorated , but the response to her video has gone viral . The Liv Wise Fund , started in her name in support of brain tumor research , has raised more than $ 27,000 , and the video got enough attention to prompt a response from Perry about how moved she was by Olivia . `` You sounded great , '' Perry said in a video she sent to the family , which was also posted to YouTube . `` I love you . A lot of people love you . ... Keep roaring . '' Wise is at home now , and her family is making her as comfortable as possible . She is only conscious for moments at a time , her family said . `` Her health is really bad , she 's at the end , '' her cousin Jeff Kassel said . `` She is still conscious at times and taking it all in . '' In May : Teen boy featured in viral video dies . Wise was vacationing in Florida in January 2012 when she had a seizure . She was diagnosed with a very aggressive form of brain cancer . Immediately , she knew the prognosis was bad , but her mother says she has barely complained . `` Every day , she wished for a cure , and rarely succumbed to negative thoughts , '' her mom said . She insisted on keeping up with her studies until just a few weeks ago . `` To tell the truth , her diagnosis did n't change her personality , '' her mom said . `` It only enhanced it . She took the news in a mature , reasonable , responsible way . ... Even in the most difficult moments , she managed to bring laughter and friendship to all that were caring for her . '' She woke up each day with a goal to find something bright , to be happy , her mom said . And she was n't afraid of being vulnerable . So when a family friend with a recording studio offered her the opportunity , she went for it . `` It was spontaneous , '' Kassel said . `` And we did n't know with her health if she would be able to do it , but she did . For a 16-year-old , this is becoming her legacy , and it 's such a beautiful thing . '' Visit The Liv Wise Fund .
Olivia Wise , 16 , has an inoperable brain tumor . She is in a coma and her parents are fighting to keep her alive with the help of a ventilator. A lot of people love you ''