Please help a sister out

This is my beautiful sis Corina.  She is in the final stages of kidney failure, requiring dialysis every three days.  She also has Diabetes, which has caused gangrene in her toes.  Corina's wheelchair was stolen whilst she was getting into her car at Cockburn Gateway Shopping Centre.  Corina is unable to walk without assistance and now has no way of being mobile.  I am hoping to raise enough money to buy Corina  a new wheelchair.  She is a kind and gentle lady, an educated and very intelligent woman who puts so much into the local community,  She worked with at risk youth, families in need  and now shares her stories with her weekly yarning.  She is my go to woman for answers around Aboriginal customs and culture and how I can incorporate Aboriginal perspectives in my classroom .  Please help a sister out.