rescind the agreement

Keith contracted to build a house for Radford. Shortly before the closing, he met with Radford, accused her of fraud, and threatened to prevent the deal from closing. During the meeting, Keith’s associate stood outside the door for two hours to prevent her from leaving. He gave her the choice of signing a Note and Deed of Trust promising to pay him more money or of going to court to settle the matter. Radford signed the agreement, but later sought to rescind it. Should she be able to rescind the agreement?