jubilife city i think
Beat the first gym leader: Roark.
You have to beat(or Catch) Dialga first.
train your Pokemon to about lv 20
gotta beat the other gym leaders first and them come back to fight her
you beat the gym leader
just beat the fourth gym leader
You beat the first gym leader, Roark in Oreburgh City.
beat the #?*@! gym leader
what did you say
She is the 5th, gym leader, you have to beat pastoria gym first the vielstone! then go back to harthome city and you can find her in her gym
the best way to beat the 7th gym leader is with a fire type Pokemon
Go to the next city and battle the next gym leader (gym leader Fantia located in Harthome City)