Absolute best resource for writing I can suggest is the NaNoWriMo Young Writer's Program. My son has completed it three years in a row and spends the bulk of the year talking about what he'll do next November. They have a full free curriculum online, and November is full of inspirational talks by professional authors as well as many "underground" local events.

http://ywp.nanowrimo.org/

If your daughter loves it, there's also Script Frenzy in April and Camp NaNo in the summer.