She said that we couldn't do it because the contract doesn't say that we can. I tried to explain to her that contracts don't work that way but she wasn't buying it. She couldn't direct me to anywhere in the contract the prohibits the lease transfer.
If the lease does not prohibit assignment, then you may be able to assign the lease to someone else. But if the leasor does not release you from the obligation, you remain liable for all the obligations. So you haven't really done anything of benefit to you.