Oh honestly! "I'm not being negative, I'm being practical. I'm a Healer at St. Mungo's and I've seen plenty of people come in due to accidents with Transfiguration or Charms gone awry. I'm certainly not going to stand around and watch you do the same thing." And she meant that. She was all for taking his wand from him if worse came to worse.
"Sure you are," Anabel replied, glancing at him again and giving him a good once over. She'd put his age a lot younger. She certainly didn't believe that he was as old as he was trying to say or believe that he was who he said he was either. Definite habitual liar.
"No, you really don't." And she didn't really feel the need to justify what she said to this... delinquent. "So clearly that means you aren't him."