Loads of "nice witches" in Harry Potter and the Chamber of Secrets, including ...
Hermione Granger
Mrs Weasley
Ginny Weasley
Professor Minerva McGonagall
Professor Pomona Sprout
Penelope Clearwater
Susan Bones
Alicia Spinnet
Katie Bell
Angelina Johnson
Madam Pomfrey
Hannah Abbott
Lily Potter