Charmaine owns her own apple orchard near Ecruteak City. While Ash and his friends were traveling by the orchard, Pikachu was caught by Charmaine in her net as she suspected it was stealing her apples. After Ash showed her that the apple Pikachu was holding had bite marks that didn't match Pikachu's teeth, she was quite sorry for her quick accusation.
Pikachu helped Charmaine figure out who the culprits where that were stealing her apples which ended up being a group of Pichu. Realizing that the Pichu were just hungry, she made a friendly gesture and gave them some apples to eat. Charmaine though was left with a dilemma of what to do with the Pichu.
The Pichu helped protect Charmaine's apple orchard from Team Rocket and she was very grateful to the Pichu for their hard work and they all jump over her and hug her. A new friendship between Charmaine and the Pichu had been formed and after Pikachu showed the Pichu how to collect the apples, Charmaine now had a new group of friends who ere willing to help her work in and protect the apple orchard.