Well Done Sabrina - it is a tough decision and we have also shared your grief.
The difference being our daughter was attacked at 4 and a half years old by a Pedigree Golden Retriever, called Jack, that was my first ever dog.
My Mother was terrified of dogs - infact we were not allowed pets because of her fear, so I got Jack so that my daughter would grow up with a friendly dog and not miss out like I did.
I got him at eight weeks when my Daughter was born, and they grew up together. We have lots of family photos of him playing with her in the baby walker in the garden of our first home together in Ireland.
We had to have Jack put down, the vet said it was Rage Syndrome, and it was really sad for all of us but especially for my daughter who not only had to have surgery on her leg, and is scarred for life, but because she also lost her best friend, and I my favourite dog whom I wanted to breed from.
My Mother blamed me for my Daughters trauma and scars, and has never forgiven me really, it strengthened her argument against animals.
Did not deter me though, we have a Cavalier King Charles and a Rottweiler, and pigs, cats, rabbits, goats ,guinea pigs and guinea fowl, hens, geese, miniature donkeys, emus, Sheep, Ducks and hope to get more dogs in the near future too. It was one bad experience, and not anyone's fault.
You have made the right decision, and we all send our love to you at this difficult time x x x