Why are we acting as if Emma got to do something Jean couldn't or wouldn't do, though? In the first issue of ToM, she said she needed her help, changed her mind, and navigated Magneto's psyche anyway. In the second issue, she refused to mindwipe the Avengers, but Emma didn't mindwipe them either because she was already in the Hatchery and used her tp to cloak it from them. The only reason Jean didn't do the same is that both she and Lorna believed the Avengers already saw the Hatchery, hence why Lorna suggested the mindwipe.