check with a cpa in Indiana, but from what I've just read on-line your state did some retroactive changes to inheritance taxes for deaths back to 2012.
I've had to deal with administering 3 different estates in 3 different states (a will, a trust, and one intestate-nothing written up), and none of them had the kind of complex individual and estate taxations laws your state appears to have in place. that said-for federal taxes I can say that for life insurance to a private party it's almost always non taxable, and from what I just read on-line it looks like the law change in Indiana made it non taxable to the state as well.
check with an Indiana cpa to be sure.