My Federal tax return was mail to Delaware Division of Revenue. Will it be forwarded to the right place?

[xmasbaby0]

Probably not.  It will more likely end up in a shredder or just be stapled to the rest of the state return you sent to DE.  You should have mailed a federal return to the IRS.
<a rel="nofollow" target="_blank" href="https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment">https://www.ir...>

To change to e-filing:
<a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/3399683-how-do-i-change-from-mail-to-e-file-in-turbotax-online?jum...>

[Carl]

This happens at both the state and federal level more often than folks think.  When the IRS gets a state return, they just shred it. The IRS, being a federal agency, could care less about state taxes. The opposite holds true for the 37 states that tax personal income. So if you mailed your federal return to your state, they just shredded it. So you need to print, sign and mail your federal return again if mailing it is the option you're choosing in lieu of e-filing it.