first DV shelters do allow anyone who is in an abuse situation, its not always about abuse by spouse or intimate partner. domestic violence just means there is some sort of violence in the home and relationship that someone needs to escape from. relationships are not only boyfriend/ girlfriend/spouse. there are many different kinds of relationships. think of relationship as just another words for bonding or ties to someone.

your post says you are in therapy. talk with your therapist, they will be able to help you figure out the safest way to get free from who ever is abusing you. that part of what therapists are trained for ...to help their clients find resources that they may need to help them.

also you can contact your social services (some places call this department of human services) they have a section of caseworkers called adult protective services. Adult protective services can help you, they have special funds for moving people out of abusive homes and into motels, hotels and other safe places. since you dont have a job they can also help you to sign up for welfare where you can get income in the form of cash, food stamps and medical insurance either temporarily or long term depending upon how your states welfare does things. your therapist can help you with this during your therapy sessions. social services adult protective services can also open an investigation into whether your parents are in your states laws committing abuse on a mentally or physically handicapped person or on you whether you are mentally or physically challenged.

my point there are many ways a person in your kind of situation can get free. talk with your therapist, they will know what the best thing for you to do is.