Legal Question in Family Law in Indiana

Yes. The law in the State of Indiana takes a dim view of perjury. Lying in ANY court in the US is perjury Different states have different punishments. In federal court, in a bankruptcy, it can be a "go to jail" moment. There are many times people lie under oath in court. Much of the time, it isn't caught. But, when it is, there can be consequences. Depends on the magnitude, the harm done, the judge, the circumstances as to what punishment the Court will issue.