She has created a page on the Givealittle website and hopes to raise $2500.
Gabrielle loved music, loved people, loved going to Coastlands, loved to laugh, loved her niece Layla and nephew Noah.
"She was so happy despite everything that went on with her body," Alana said.
Gabrielle lived most of her life in Raumati Beach with family before living independently with three flatmates in a house over the railway lines in Paraparaumu when she was 22.
Even though Gabrielle couldn't speak, and had limited mobility, she had a big impact on people who met her.
"I think there were about 300 people at her funeral and so many of them we didn't know," Alana said.
Gabrielle was "an amazing young woman," she said.
www.givealittle.co.nz/cause/gabriellekoornneef