An investigative subpoena in Florida compels a person to attend and testify or produce documents before a court, grand jury, or state attorney during an investigation, proceeding, or trial for a violation of criminal statutes. The person cannot refuse to testify on the grounds that the testimony may incriminate them. However, the testimony or evidence provided under such a subpoena cannot be used against the person in any criminal investigation or proceeding, except in cases of perjury committed while giving the testimony or for any subsequent perjury § 914.04. Witnesses; person not excused from testifying or producing evidence in certain prosecutions on ground testimony might incriminate him or her; use of testimony given or evidence produced., State v. Mitrani, 19 So. 3d 1065, Zile v. State, 710 So. 2d 729. The immunity provided under Florida law is known as "use and derivative use immunity." This means that the compelled statements and any information derived from those statements cannot be used against the witness in any subsequent prosecution, except for perjury committed during the testimony State v. Mitrani, 19 So. 3d 1065, Zile v. State, 710 So. 2d 729. The Florida Supreme Court has affirmed that such immunity precludes the use of the compelled testimony in any criminal prosecution against the witness, ensuring that the witness is protected from self-incrimination State ex rel. Hickland v. Coleman, 137 Fla. 102, Putnal v. State, 468 So. 2d 444. Therefore, while a person is required to comply with an investigative subpoena and provide testimony, the testimony given cannot be used against them in future criminal proceedings, with the exception of perjury charges related to the testimony itself State v. Mitrani, 19 So. 3d 1065, Zile v. State, 710 So. 2d 729, Putnal v. State, 468 So. 2d 444. This does not mean she cannot be charged for her role in Madeline's death.