Befriending Valtor

It hasn't been that long since the Winx had defeated Valtor. Surprisingly, he survived, but lost all his powers. No one could find it in them to kill a defenseless man, instead, it was decided he would work at Alfea as punishment, Only Femke, the Fairy of the Voortrix helps him because she likes him, but will Valtor be able to accept her friendship? And why looks the girl familiar