@eminadigicc0306
If I am reading it correctly I believe the defense/ argument she is using is the fact that with the removal of her position in the court and the subsequent filling the position the position by the defendant changes the whole dynamic of the court case, because by easing his position she change the case form the royal family against an heir of a Count to that against a count, which in turn changes the consequences for position if they go through with this action removing the hand of a active count would likely create a divide between the royals and noble factions (this isn’t helped by the already existing divid) and serves as justification for any descent against the royal family.
Also this is likely a sham trial and everyone knows it, this trial was never about serving justices for acts against the royal family but rather a way to put the noble faction back in in its place (a metaphorical smack if you will). As for the Reason that they targeted him he besides the fact he was in the wrong place at the wrong time as the first heir she will serve as a strong message but there is already two replacements heir set up to replace him so limited damage overall.
Ps I know I probably remember her title wrong but the higher her position the greater the point