There is no limit. As long as your friend explain everything well, it won''t confuse the readers.
If you choose to publish, an editor could help you combine or remove characters in the event that, for example, 14 characters becomes too much to handle.
To me, 25 characters is my limit. Though the book "Gone with the Wind" has over 500 characters!
Don't worry, the number of characters your friend is creating is ok.
Just make sure that your characters are distinct!
Good luck
If you choose to publish, an editor could help you combine or remove characters in the event that, for example, 14 characters becomes too much to handle.
To me, 25 characters is my limit. Though the book "Gone with the Wind" has over 500 characters!
Don't worry, the number of characters your friend is creating is ok.
Just make sure that your characters are distinct!
Good luck