you need a Pokemon that knows a gost type move. or get a gost type Pokemon because she uses gost type Pokemon. have the Pokemon have high special attack and high speed easy win. don't forget the special defense
Hearthome
The fifth gym leader in Pokemon platinum is crasher wake but you get the fourth badge.
Beat the gym leader
The fifth Gym Leader in Pokemon LeafGreen is Koga, the leader of Fuschia City's Gym. He specializes in Poison-type Pokemon and hands out the Soul Badge.
Beat the fuchsia city gym leader.
petalburg city gym. That is the one where you 'Dad' is the gym leader. hope this helped.
The fifth one in Hearthome City.
you just have to go to petaburg city and enter in the gym
You have to travel to Solaceon Town, win Veilstone City's gym badge, win Pastoria City's gym badge, and visit Celestic Town.
The fifth gym is in Hearthome City - you have already been here.
In Pokekon Sapphire, you get the 5th badge after defeating your opponent in a Gym Battle at Petalburgh.
the fifth badge is from Sabrina in Saffron City.