If it was missed on your 2014 return I would go back to Jackson Hewitt. They should have caught that. If it's not there they should amend it for you for free. Did you not even claim your daughter as a dependent on your return?
To use Turbo Tax, See this FAQ on how to amend a return done by hand or by another company
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If you want to amend a prior year return you would have to buy the desktop version of Turbo Tax.
You can buy prior year desktop versions here....
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