"Inbrief" is a short story, which acts as a tie-in to Battlefront: Twilight Company, that was published in Star Wars Insider 161. Written by Janine K. Spendlove, with art by Jose Cabrera, it follows the character of Brand as she joins Twilight Company.

It has also been collected in "Star Wars Insider Fiction Collection Vol. 2"

https://www.youtini.com/book/star-wars-insider-fiction-collection-volume-2