And Letters to the Lantern! (HP/DC): The City Off the Edge of Never.
https://archiveofourown.org/works/539020.../220286711
tealruby Wrote:Green Lantern gets an alert message delivered to her office on the Lighthouse. Should be an easy matter to deal with… except it’s not. She knows that expert assistance is needed. Because she knows there’s something special involved.
Notes:
The following takes place soon after the events from Worlds’ Greatest Heroes (A Marvelous Exchange, Part 3) of Lantern Granger On Patrol.
https://archiveofourown.org/works/539020.../220286711