It’s an FBI employee. The notes reference the DOJ as though a separate entity from that of the writer: DOJ is “them”. Sally Yates was DOJ. The writer cannot be SY.
These are notes prepared before the Flynn meeting at the WH. As they’re dated 1/24/2017, they’re likely notes prepared in connection with a morning, pre-interview internal FBI meeting. The notes might have been commenced the previous day. Likely present at that internal meeting would be one or both of the agents scheduled to interview Flynn (Strzok and Pientka) + some FBI legal executive. The notes read to me like those of a lawyer. If there was a lawyer present at the planning meeting - and that has to be probable given the subject matter - Lisa Page would certainly be a candidate for that person.
So these might indeed be notes written by a woman. But not Yates.