No, I was focusing on the bottom bridge but the enemies close to the village in the top left corner decided to move so I placed Fir and Noah on a choke point with Clarine standing by while Tate waited to make her move but the duo took too long to kill the 5 cavaliers that a first wave of reinforcements came and was on the move.
I tried to hold on but 3 turns later, the second wave came (with a paladin) so I placed Clarine in a bush as a distraction while the duo ran away and Tate went to the village. It's still working right now (Clarine, the dodge tank).
But because of that, I had no healer for the main group so I used Lilina.
Thx for the anwers about Raigh or Sophia.