Handling a pack of dogs requires a level of structured leadership, which gives the Handler a feeling of regaining control of their life. Most people are in awe of a person who can effectively manage a pack of dogs, and this translates to confidence and a feeling of power. That feeling of regained power and control is magnified for the Handler when they are involved in the training of their own Service Pack.
Training a pack of dogs requires a different set of skills than training a single dog. This set of skills increases self-confidence, alleviating feelings of hopelessness and helplessness. Training one's own Service Pack requires a person to think and act like an animal behaviourist...observing and understanding an animal's behaviour can stimulate a Handler to observe and understand their own. Training one's own Service Pack also establishes bonds of trust, which is critical to having a working relationship.
By having multiple dogs, if one becomes ill or dies suddenly, there are other dogs remaining, and a new dog can be brought in to be trained. Given the length of time it takes to train a Service Dog, this way the Handler is never left without.
The Service Pack is capable of responding differently to situations that a single Service Dog may not be able to handle, recognize, or respond to, since survivors of Domestic Violence often suffer from multiple health-related issues.