Pretty sure that is NOT her.
“Kathleen Chung, Marquette 2001, is a solo practitioner in Madison and previously was assistant general counsel for the Wisconsin Department of Transportation for nine years. She has been director and president of the State Bar of Wisconsin Government Lawyers Division and a member and chair of the Diversity Clerkship Program and is a life Fellow of the Wisconsin Law Foundation. She is on the Executive Committee of the State Bar Board of Governors.”
https://www.wisbar.org/NewsPublications/WisconsinLawyer/Pages/Article.aspx?ArticleID=26096
she is a Wisconsin resident in the article but in the note she wrote to Hunter, her mother lives in Northern VA. I believe you are correct, it isn’t Biden’s assistant.
Thanks Ben.