What's being alleged is that she escorted the person out a rear entrance that is only used by juries and defendants who are in custody, not defense attorneys or free defendants. It is alleged that she interrupted the defendant on their way out the regular customary door and guided them through the rear door instead.
If those allegations are true (which is a big if at this stage), it's not hard to see how that could be construed to be a private act taken outside the course of her normal duties to deliberately help the defendant evade arrest.
That doesn't make what she did morally wrong, of course, but there is a world of difference between the kind of abuse of power that many people here are assuming and someone getting arrested for civil disobedience—intentionally breaking a law because they felt it was the right choice.
If those allegations are true (which is a big if at this stage), it's not hard to see how that could be construed to be a private act taken outside the course of her normal duties to deliberately help the defendant evade arrest.
That doesn't make what she did morally wrong, of course, but there is a world of difference between the kind of abuse of power that many people here are assuming and someone getting arrested for civil disobedience—intentionally breaking a law because they felt it was the right choice.