When Henry Rothman was testifying in the grand jury hearing he had his lawyer present. Grand jury proceedings are secret, the only person that is allowed to have a lawyer present is the defendant if they are testifying in the hearing, though it is unusual for a defendant to testify before a grand jury (or even be present) seeking to possibly indict them as their lawyer cannot make any objections or cross-examine their client. Since Mr. Rothman had already pled guilty to manslaughter he wasn't a target of the grand jury hearing, only a witness.
Before the grand jury Stone once refers to Elizabeth Hendrick as "Miss Hendricks".