After the fraud escaped, the principal was arrested by the public security organs. I found the principal's family and the 2-year-old child. What is the most I can do to find myself?

You can't just go to other people's children. If he is sued, you can attach a civil lawsuit. Incidental civil action refers to the litigation activities carried out by judicial organs in the process of criminal proceedings, which not only solves the criminal responsibility of the defendant, but also solves the problem of compensation for material losses caused by the defendant's criminal behavior. Article 99 of the Criminal Procedure Law stipulates that if the victim suffers material losses due to the defendant's criminal behavior, he has the right to file an incidental civil action in the course of criminal proceedings. If the victim dies or loses his capacity for civil conduct, his legal representative and close relatives have the right to file an incidental civil action. If state property or collective property suffers losses, the people's procuratorate may bring an incidental civil action when it brings a public prosecution. When necessary, the people's court may take preservation measures to seal up, detain or freeze the defendant's property.