Indiana Code Title 35. Criminal Law and Procedure § 35-37-6-10

Sec. 10. (a) A victim does not waive the protections afforded by this chapter by testifying in court about an offense.  However, if the victim partially discloses the contents of a confidential communication in the course of testifying, either party may request the court to rule that justice requires the protections of this chapter to be waived, to the extent they apply to that portion of the communication.

(b) A waiver under this section applies only to the extent necessary to require any witness to respond to questions concerning the confidential communication that are relevant to the facts and circumstances of the case.