you have to get her pokegear number by talking to her in the olivine cafe between 1 and 2 pm. she can be rebattled on Wednesday afternoons.
Chat with our AI personalities
You can't get a Soothe Bell in Gold, but you can get the Soothe Bell by trading with Jasmine in Heart Gold.
you have to swim across the ocean to the left and in the city there there is a guy who will give it to you
The only way you can get one in Heartgold is Jasmine will trade you one with her Steelix in the National Park (she'll offer it after you beat her for the second time)
Jasmine is in Diamond / Pearl. She doesn't do much of anything
you go to cianwood city. but you have to surf there. Edit: Actually, you have to go to Cianwood before you beat Jasmine. After you beat her go east past Mahogany to Blackthorne City and face the 8th Gym.