Paying Indiana State Tax

I had intended to paper file my Indiana State taxes and avoid the upcharge for e-filing but it appears that TurboTax automatically e-filed my state taxes anyway after e-filing my Federal taxes. The instruction sheet for my IN state return says "Do not mail a paper copy of your tax return. Since you filed electronically, the IN Dept of Rev. already has your return."  How can I confirm that my IN taxes were actually e-filed?  Also, will TurboTax be billing me for this?  And, if so, how?