Cave_Johnson
R.I.P. Bob Saget
They mentioned in passing that they were looking for the women who killed Trystane and that they need to address the woman who took over in Dorne. The small council did not care about any of it, though.
I just listened to that part again, they only mention Myrcella and the women overthrowing and taking control of Dorne. Nothing specifically about Trystane. I suppose maybe he's being included in the "overthrowing Dorne" part, but that doesn't make much sense since it's sort of a different matter being that it occurred at King's Landing and they haven't caught the murderer.