If you're using a sword to represent both the hero and the heroine, then it can be hard to differentiate them. Instead of the Wonder Woman logo, you could try the female symbol of a circle over a cross, perhaps even working it into the hilt. Or you could represent each as something more figurine, such as a bust of armor and helmet, which would allow more room for some sexual differences.
If you're using a sword to represent both the hero and the heroine, then it can be hard to differentiate them. Instead of the Wonder Woman logo, you could try the female symbol of a circle over a cross, perhaps even working it into the hilt. Or you could represent each as something more figurine, such as a bust of armor and helmet, which would allow more room for some sexual differences.