Heres the summary to the Captain America issue Emma is slated to be in, this issue seems to be apart of the Captain America crossover “cold war”
“In CAPTAIN AMERICA: SENTINEL OF LIBERTY #8, Captain America’s allies find themselves scattered across the country with no recollection of how they got there, so Steve calls in a favor with the one person he knows can help—mutant telepath Emma Frost! But what Emma finds chills Steve Rogers to the bone… And as Steve and his allies race to save a city under siege by A.I.M., the Outer Circle’s ultimate assassin is revealed: Introducing M.O.D.O.C., the Mental Organism Designed Only for Control!”
https://www.marvel.com/articles/comi...war-emma-frost