She is in Cerealen City.
Once you beat the Pokemon League at the Indego Platue, you will be able to go to Kanto and see Misty.
hes in a house were you find misty the gym leader for the first time.
im not sure but if someone does no please help me
To get to Misty you have to go to the Power Plant and fix the thing up there. Then you go to Bill's grandga's house and if you go past his house you will find Misty and her boyfriend. And as for Erika she is already there.
bills grampa in the town where you battle misty
Golduck, Quagsire, Lapras, and Starmie.
Nobody knows actually.
(Sorry i though for a second you said "Why do you have to find Misty") (This question needs to be improved)
go to the third gym (lt.surge)
top left tube
you can;t because she will never be there until you get the part to the power plant
you find her in the cerulian city gym