Lady Bresyn Risai in my pHarn appeared briefly in the pregame of two of the PCs: the apprentice herald and the trainee Ilviran priestess.
I have her as in regular contact with Lady Derwen Verdreth, the king's Master of Esoterica. A few meetings are open, mostly at social gatherings such as those provided at the home of Lady Cheselyne Hosath (who prefers the designation: Princess Cheselyne

) with occasional meets that most often appear coincidental at the Peonian temple or her rarer appearances at the Laranian temple (in my pHarn the worship of both is quite acceptable, even expected, of noble ladies). They also meet in secret, usually at the home of Lady Risai or the Save K'nor temple, facilitated by the Lyahvi magics of illusion by one and the Savoryan magics of the mind by the other.
Lady Bresyn is a consultant to the Master of Esoterica, her arrival due to the slowly growing incidences of magical bleedthrough from "the other side". The young PCs met her in the following way (with details elided in case any of my players reads this

):
Lumede of Tiselwaith did not look as harassed then as he does now and (E28, Upper Eastside) had an apprentice at this time. Late one summer evening, said apprentice went exploring in the sub-basement of the Tiselwaith home and accidentally released "something". The resultant "shouting" as he died was heard by most telepaths and Shek P'var in the city, including the PCs, who set out to investigate. Warned off at first by the Lady, they were within the hour part of a ritual set up hastily at the Ilviran temple just along the road, they and the priests aiding Lady Verdreth and Lady Risai in fighting off the presence... with the battleground being the body of the young Ilviran priestess, who has the Medium talent as well as Telepathy.
A week later, after the internal bruising had subsided, the PCs were rewarded suitably, most notably with the temple of Ilvir now having the right to an afternoon performance during the Tashal Fair but also with access to a book of algebra for the herald and a rose from the royal gardens for the priestess.
Other connections in my pHarn:
When Ars is seen visiting the alchemists of the Guild of Arcane Lore (H12), it is not always Ars but sometimes the Lady, disguised with magic.
Lady Bresyn is on nodding acquaintance with the sculptor who dwells opposite her home (H11).
She attended a party or two at Sir Danyes of Bernan's home (H8) soon after arriving but not since then.
She is sometimes seen dining at Galopea's Feast (H15), most often in the company of noble ladies.
She casts horoscopes for the same noble ladies and a select few others, eg. Haber of Sarlis (I9) and on one occasion for Sir Rohn of Sarlis (B5).
Soon she will meet Matakea Varotta (H6).