She can apply for a restraining order without a lawyer. In some areas, the courts provide kits to help people prepare an application for a restraining order. A social service agency may be available to help your aunt. The court office should be able to tell her if such an agency exists in her area.

On the other hand, it can be helpful to retain a lawyer, especially if your aunt wants to ask for an ex parte restraining order and the forms need to be completed quickly.