It wasn't a job she'd have wanted, but it was still great. She has so much control, and the people working for her were killing on command. Being M, controlling the MI6 in the year 2116 wasn't what she thought she'd do, but after so many disasters with the Doctor, she had no safe place anymore. She managed to get to a parallel timeline. Here, aliens were still a secret. Overall, it seemed like 2016 without any aliens. It was boring.
Of course she knew the Doctor could follow her, she knew he still had his TARDIS while she was stuck here. But M also had plans, such great plans. She would first control this country and afterwards the whole world. The world her "best frenemy" loved so much, even if it wasn't the one he knew. And then, she'd have the resources to build a new mechanism and travel again. It wouldn't create a TARDIS, nothing nearly as fancy, to be honest, but there was nothing else...
And well, it would destroy the planet, but then certain annoying agents would also be gone, Missy thought happily.
