She is well known and liked within the industry. She took on a lot of responsibility right away in Baltimore, as she developed and built the Orioles first database for numbers. As a side note, the Orioles are a mess. They had a number of very bright and capable young emerging executives the last 4-5 years and now have lost all of them. They lost Tennenbaum, Gelles and Klentak..... has to be hard for Orioles fans.
He wants to be a GM, and this likely gets him closer to that. The Braves are a franchise on the move. Some success as a wartime second in command and he could be a GM in no time. Something he probably couldn't have done if he stayed here, and least not within the next few years. At least that's how I see it from the outside.