Unfortunately Kwisatz Haderach's may be the most likely but also...
Service Dogs are used for...
* Service Dogs (for a physical disability, debilitating chronic illness or neurological disorder)
* Hearing Dogs (for the deaf or hard of hearing)
* Seizure Response Dogs
* Combination Dogs (service/hearing, service/seizure, hearing/seizure)
* Service Dogs for Children with Autism
* Social Support Dogs (in-home only companion)
But even THEN, most are still retrievers....they are super easy to train, REALLY want to please, connect easily with their person, friendly, and are really good at doing things with their mouths (retrieving, opening doors, pulling-up covers, really anything remotely similar to retrieving can be trained.)
It would not be the case with that woman but service dogs are also used as therapy dogs (in a psychologist's office, in the courtroom for cases involving children, in nursing homes and hospitals, in libraries and schools to put children at ease when they are learning to read, probably a few more that I have forgotten)