If he cannot afford a lawyer, the court will appoint one. If he is out on bond, he will have to apply to see if he qualifies. As soon as you find out who his court appointed attorney is, contact her. She may be able to prevent the indictment by including a statement from you in a presentation to the Grand Jury. If this presentation is successful, the case is over.
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If your fiance is indigent, he WILL be appointed a lawyer. i find that appointed lawyers are more often better than cheap lawyers who have no idea what they are doing. Generally, you get what you pay for.
If you are the complainant, you should seek counseling for yourself. The police do not generally make up allegations in these situations, and even if they are not exactly on, you were assaulted by him.....