Looks like you got the peace ending for Arland/Jiyel, instead of the good ending or legendary ending.
So you just *barely* missed out! But you are right that does seem a bit harsh of a line for a very good overall outcome. I'll add adding more variation there to the list of things to change post bug fixes.
(And yeah, who can live up to that Katyia chick anyway.)
edit: I looked into it just now and it turns out there is an all peace line - I just forgot to account for an all peace or better + good rebel , so it's fixed <3