I cannot tell you specifics about how much tax you should owe, but if you do this exactly in the order I have explained, your state taxes will be correct.
To make this work you need to make sure some info in the federal entries is correct. Go to MY Info. At the bottom, it indicates if you earned income in another state. If that is not correct edit it stating that you worked in Indiana. Your W2 should have the correct info for the Indiana taxes withheld.
Then you want to complete the nonresident state return which would be Indiana. Make sure your residency is Reciprocal Nonresident (see screenshot). It will ask about residing in Kentucky. Most of the information will have already flowed to this return. It shouldn't take long to complete.
Now go to the Kentucky state return. You will be a Kentucky Resident. Did you earn income in another state? Credit is not allowed for reciprocal states.
If you were a full-year resident of Kentucky, Michigan, Ohio, Pennsylvania or Wisconsin, and your only income from Indiana was from wages, salaries, tips or commissions then you need to file Form IT-40RNR, Indiana Reciprocal Nonresident Individual Income Tax Return. The last form on the list: https://www.in.gov/dor/6281.htm
If you have more questions, please ask in the comment box below.
You are lucky to live in a reciprocal state. As a worker in a reciprocal state, you can fill out that state's exemption form and give it to your employer if you don't want them to withhold taxes for your work state. This will not help with 2018 but you might think about doing this for 2019:
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