I suspect even Jack is aware she needs to tread very carefully with this one. If she keeps insisting she is 'working behind the scenes'
her deluded flying monkeys will get irate and demand she is acknowledged @ Marcus and Tom.
Even promoting it now will pose difficulties for her as she would have to write some tweet around it, and she will have to maintain the 'oh yes I was involved' line (or it would be really odd) - each time risking more and more someone actually involved saying er no you weren't.
Her main problem is if she manages to whip up a significant backlash against the whole enterprise due to this silly lie, she will do herself irreparable damage - as Marcus is incredibly well respected and probably a National Treasure.