Welcome to the board! We're so glad you're here
I think that's a great after school club idea! I haven't used a workbook or anything for the girls' groups I've done, but I was just looking at some possibilities. When I googled it, there were a ton of great resources right away! Maybe you've already found them, but I'll put some of the top hits here:
Dove has something for self-esteem (the PDF is
here).
I also found this
powerpoint, which may give some ideas for your group.
Here is another PDF that offers great ideas.
And a "
manual" for creating girls groups.
Here is
another link that might be useful.
I'm sure others who have some experience will pipe up with other ideas! Congrats on being close to finishing your coursework! I look forward to your contributions on this board!