"I'm afraid I do, collars are easily removed as you have demonstrated" Lucius turned back around to face her, he knew the reason for her fear as he too had seen such brands but he would ensure that there would be no infection. He swiftly closed the gap between them and took her hand in his and looked her in the eye.
"The purpose of the ritual setting for the marking is so that I will be able to heal you effortlessly immediately after the mark is completed. So that it will heal perfectly with no chance of infection. I promise you that" Lucius left out the part where she would feel quite weak as a result but that would help to lessen the pain of the procedure and allow him to heal her in the desired fashion.