Well, a frequent theme is acceptance. Hermione has to come to terms with her new identity as a Wiccan witch and also seek acceptance from her peers. In many fanfictions, there's a theme of exploration too. She goes on adventures to discover more about Wiccan magic, whether it's finding ancient Wiccan texts or meeting other Wiccan practitioners. And the theme of secrecy often pops up. Since Wiccan magic might be seen as different in the wizarding world, she sometimes has to keep it a secret, which adds an element of mystery to the story.
It's not straightforward to say she was evil. The Scarlet Witch's behavior in the comics was influenced by many factors, and her intentions weren't always malicious. Sometimes her powers caused unintended consequences that were seen as negative.
Scarlet Witch is indeed a mutant in the comic universe. Her mutant powers give her unique capabilities and play a significant role in many storylines. However, the extent and nature of her powers have evolved and changed over time.
The Scarlet Witch's character in the comics is complex. She has moments of both good and bad, depending on the storyline and her motivations. So, it's not a simple yes or no answer to whether she's evil.