Trapped Between the Twin Dragons

The dragon clan is ruled by twin brothers, Thues and Ciel, and a curse has settled on both of them that makes them more violent with each day it runs. Seraphina is the only purifying healer alive. She is sent into their castle under false pretenses with two things to do: take Thues' Heartstone, and draw Ciel in. The terms are that she has to remain with them a full month for it to work. Living in the castle she finds out something nobody told her about how the curse operates. On the fifth day it takes hold, the two brothers begin to share every sense between them, so that whatever one of them feels, the other feels at the same moment. Anything she does to either of them reaches both, which leaves her stealing from one man while the other knows exactly what her hands are doing.