If there is a plan, and Q is a team of 10 people including the President, there is no way Obamarosa knew anything about it. So she could just be acting stupidly, as she did in the 90s working for Gore, and as she has done everywhere she worked. She may be being used, but it is without her knowledge. No way do you use a whack job like her as part of your team on such a crucial mission.
The direction most people will take can be generally predictable. Trump had to know Omarosa's character. Likewise, he had to know or have been informed of Mueller's character.
Complicated business. It would be too obvious if these people just disappeared. Need to channel their attacks.