Secular logic for beginner?

[mo2]

I would like for dd to take at least 1 logic course in high school but I'm having trouble finding anything secular other than college texts, and I'm not sure she is ready for that.  She is not a strong writer, so I would like to find a sequence where I could work on writing and logic simultaneously and then move into rhetoric. A search of past threads turned up options of The Snake and the Fox or An Introduction to Formal Logic by Peter Smith.  Has anyone had success with either of these?   It seems there isn't much available for secular logic curricula.