Her informal coms would be a better place to find any evidence of negative emotion as she would be closer to showing her true colours assuming she is putting on a act. We so no evidence of envy, hate, spite not even anger when aggrieved, she seems to mediate any anger in her coms with dr av by simply saying she is quite upset at the recent negative comments.
You have no idea what she might do with negative emotions.
I grew up with a lot of negative emotions and I never acknowledged them, never mind processed them, until I was hitting 40. What I did experience was severe depression, as a result of stuffing down my feelings until they were numbed, without any awareness I was doing it. Denial is a powerful thing. Ironically, the first time I remember feeling anger that I was aware of, a proper heart-pounding adrenaline rush, was when a very experienced therapist suggested I was angry. I sat there, feeling the shame of what I thought she was 'accusing' me of, so angry, like she thought I was a criminal. I was brought up to smile and please others. I told her she was wrong and it was several more years after that until I faced it.
LL wrote the word HATE in huge thick lettering and heavily encircled it. That suggests teeth-gritting, spitting-mad, to me.
there is also good continuity between her outward persona in a professional setting and her more informal coms as evident by the fact her use of language doesn’t change much. That suggests she is being honest.
It suggests consistency of outward persona, not honesty, IMO
if it took allegations of this severity
She had not faced allegations at the time she wrote the note.
I am confident that the diary would contain at least something of note to the prosecution
I think she would want to keep her diary free of anything incriminating, if she is guilty, IMO. If anyone ever found it there would be no defence.
she also does state in personal communications that she has cried, needs a break
That assumes truth in what she says, which I don't assume. It also assumes truth in the reasons she's given, when it could be she's reacting to suspicions.