What type of law is insurance policy theft from relative in another State

I need to know more information to see if I can further assist you.  One thing that we need to learn about is how was the beneficiary in the policy, was it your sister only and was your name mentioned in the policy and how much.  If you were listed and for some reason, your sister received all the funds, then you may also have a claim against the insurance company.  Simply put, we need more information from you.