If you didn't end up filing your state return, you can contact customer service to discuss a possible refund. See the following.
https://support.turbotax.intuit.com/contact/
I'm sorry, but I don't understand what you mean by "already sent in your federal for the state". Can you clarify please?
I sent in my GA Federal return but I was prompted by payment screen of $36.99 to file my state alongside the federal. I didn't have the money at the time and had to wait I didn't know that I couldn't refile the state alone later because I had already sent in the federal without state. I tried to file and was charged the $36.98 but was not allowed to file my GA State tax.
I also didn't want an extra $40 taken out of my return just to pay by tax return.
If you didn't end up filing your state return, you can contact customer service to discuss a possible refund. See the following.
https://support.turbotax.intuit.com/contact/