Princess needs a defibrillator

I am the mom to a princess who is 4 years old and is amazing. She has had 4 cardiac arrests in 3 months all resultings to being put in an induced coma. Her heart rate sits dangerously low when asleep and has stopped working. She has a loop in the heart which monitors her heart rate. She can be running around like a normal child and then out of nowhere her heart will stop. We currently have been in hospital for the past 9months.
She is a complex child who has had numerous heart surgeries, bowel surgeries and is fed via Tpn (which is a tube in her heart and has fluids running 24 hours a day. We cant reduce the hours as her sugars drop when not connected).
I am raising money to buy a defibrillator for home. I dont feel safe without one knowing her heart can stop at any minute. I think it would benefit her and us as a family tremendously.