Sisters, Magical Sisters

Sisters, Magical Sisters is a book in the Family Series, which is based on Flora and Miele.

Description
"Bitter surprise for the Winx Club: at Lynphea Miele is no longer the sweet fairy of the past, but a little rebel witch. The game has left room for powerful spells, but what is worse is that the little sister of Flora announces to her family to want to enroll in the college of Cloud Tower and not to Alfea. It would seem the work of the Trix... and when Miele disappears, there is no doubt: will the Winx be able to stop them before it's too late?"