Firstly she must have a job description, and accepted one BEFORE joining City. If her employers are preventing/inhibiting her fulfilling those duties effectively and successfully, then that's tantamount to constructive dismissal and she should walk! If she doesn't (as matters currently stand) then that's her career experience and background potentially down the tubes!
I'm pretty certain the actor portraying Lee Darnborough was on an episode of Law & Order I saw recently.
She knows perfectly well what her job is and is perfectly happy doing it, nobody's preventing her from doing anything.
I follow her and she follows me so I can still everything. She’s tweeted to say she hadn’t had a talking to and it was her own decision to take a break from Twitter.