she is at cerulean cape
misty will be a gym leader in HeartGold and SoulSilver
Where you find Misty.
Misty is somewhere on Route 25.
cerulean city kanto.hope it helps!
it is in misty's gym press a on the life savers
Travel to the end of Route 25 and she will be standing there.
Beat the rest of the gym leaders first.
She is in Cerulean City, in the Cerulean Cape. You will have to battle your way there however.
you must go to route 25 then go to right until u see a staircase go up and u see misty
it's behind one of the tubes and then you go back and give it to the master dude
Find a pikachu in the forest Train it until level 60-70 Teach it thunderbolt (or another electric type move) Shock Misty Easily
You must go and battle Misty. Once you defeat her, she will give you a badge. You have then defeated the gym.