Again, words can have nuanced meanings.
This TV show depicts the fictional character of Elrond, Herald of the High King, as a less than honest, behind the scenes puller of strings. In his conversation with Galadriel, although he professes to be her friend and tells her he's going to speak plainly, he doesn't tell her that, at the ceremony, the High King is going to declare an end to war and grant her passage to the West, which he obviously knew ahead of time because he wrote the speech. And although he looks surprised at her reaction, it came off, at least to me, as a set-up to maneuver her into an awkward position where she could no longer pursue her goals. This was not to my liking. (ETA: Perhaps more importantly, this type of behavior is not implicit in the description herald.)