If she took a moment to think about it, she would have realized that branding would have had a negative impact on her value. What if her buyer wanted to resell her somewhere down the line for some reason.

Gabriel ignores her until he's done with his transaction and has received the papers detailing Claudia's status as a slave. Then he's given the end of the chain attached to the manacles on her wrists. He promptly wraps his end around his hand to keep a firm hold of it lest she actually tries to break free. Then there's a sharp tug to make her move forwards and a "Follow me," in Latin.

Time to get her away from here to someplace private. He hadn't originally intended to rent a room to stay in but it looked like he was going to have to, once he found an inn catering to people buying slaves with quarters to keep them in, anyway.