So, Hatisse's well and buried — asking for her in Taravast will get you pointed the way of the mausoleum of the Attaryl school, where the most accomplished practitioners are entombed. She can be visited and honoured during regular opening hours.

The letters won't divulge much more than was previously stated, just now in summary, but to give you a loose idea in summary of (biased) events:

Hatisse and Arha met as if by accident, when Hatisse was assigned to finish her Attaryl education at the court of Sukhl

Their love affair was sudden, incandescent and filled with poetic cliche

Hatisse refused Arha's offer to remain in Sukhl instead of returning to Taravast when her secondment finished

Some time after her return to Taravast, the conflict between the sorcery schools of Attaryl and Bessis broke out, with the latter group overwhelmingly winning because of their fierce control of fire magic

Hatisse wrote several plaintive letters hinting that love should be proven, not only spoken of, and even promising to open the gates of Taravast and let her noble champion in

Arha took his men and headed to Taravast to rescue her, landing by sea in Sa-Hareth, then taking a shortcut through the canyon corridor that would later earn the name of Stairs of Sighs

A period passes during which most letters are Arha's, as Hatisse fails to answer: he asks if there have been any developments in the conflict and if Hatisse is safe, saying talk is that the Attaryl are getting crushed by their enemies

Hatisse sends urgent word for Arha to turn back

Arha refuses

It is unclear from the letters what leads Hatisse to shift from encouraging Arha's rescue to wanting it stopped.