I suspect Mueller will want to have a chat with K.T. McFarland.
I'm sure he will.
The Trump lawyers are lying through their teeth, that Trump didn't know about Flynn's meetings or that Kushner had ordered those meetings.
The wording in McFarland's email is clear, Russian interference threw the election to Trump. Nothing in that wording suggests that she's quoting Democrats. Perhaps there's something else in the email that indicates otherwise, but I doubt it. The Trump transition team and campaign team knew about Russian interference, and how the Russians interfered. Mueller's task is to discover exactly what Trump and his teams knew and how much they cooperated and/or condoned it, which is not an easy job.