need help on mission bonus

k i am setting here me and my friend are going back thru and doing all bonuses we are on the ruins of surmia mission and we cant fin out where to end bonus i would love sum help

the bonus end when you kill all flame keepers in the flame temple. You can reach the temple simply by following the charrs you first see after talking to the bonus activater(do not hit any of the char you follow)

leave the prince at the drawbridge

go back and to the left (right if facing the drawbridge) as soon as you can (see the green dot on mini map for where you go) be sure not to waste time or they will be killed and you do it again

talk to her than wait for the ember bearers to go by

follow them at a distance and they will open a gate

follow in killing as you go
kill the flame temple char