Yes! Matilda & Montagu in book 11.
I know, I know, ten girls, ten dares.... but then Minerva joined the gang etc, etc. Anyway, in actual fact there will be *drum roll* TWELVE BOOKS! Yes, you heard me right, TWELVE!!! So Matilda and the wicked Marquess are in eleven, so what's in book twelve I hear you cry? Well... it's a SURPRISE! So you'll just have to wait. Bwahaha.
The Pre-order for Jemima and Baron Rothborn's story is about to go live folks so keep your eyes peeled for book nine, To Bed the Baron. Yes, I know it says ten on the banner, I switched Jemima and Helena about, so Jemima is book 9. Updated banner coming soon!