I think that the dolphins helped Nikki to speak because they are extraordinary animals with incredible skills. In fact studies conducted in different countries show that the proximity of these mammals is of great help to human health with a positive effect in the treatment of numerous diseases.
Even horses have healing properties. Hippotherapy,for example,is a type of neuromuscular therapy that can help improve posture and coordonation in children with motor difficulties.
I think Nikki's mother raised the £ 10,500 with the help of all the people who knew the story of this child.
I would raise this amount of money sensitizing the people I know and selling all my jewels.