Probably, the dolphins helped Nikki but I don’t know how these did. I had read that the dolphins are very intelligent mammals, and they can communicate very good and easily with humans. However I’ve never been interesting in this question because I didn’t need it. My experience with animals isn’t good. When I was child I had two dogs and I loved them but when they dead I felt very sad and I went very wrong. Then, I haven’t ever had any animal, although I like the animals, I haven’t had any more.
I think it’s true that the dolphins helped Nikki, there are a lot of literature and scientific studies about this topic and if there are centers specializing in this, can be true. In addiction, there are others experiences with other animals as horses and dogs. I don’t know exactly, but I have heard different cases about therapies with animals to help diseases such as depression, stress, problems in personal relationships, paraplegic person.... I remember a personal case. A man who took many drugs and he wanted to stop doing it. He entered in a specially center where the therapies was with horses and finally he was capable of stopping take the drugs.