Tamsin Cooke 
Scarlet Files: Mission Gone Wild [EPUB ebook] 

Schoolgirl by day, cat burglar by night . . . Scarlet Mc Call is on her most dangerous mission yet. A cursed dagger has fallen into the hands of master criminal, Delgado. Now Scar must retrieve it before Delgado unleashes its power with a deadly sacrifice. It’s a daring mission, but Scar is no ordinary thief: she has the ability to transform into wild animals — the problem is, she can’t always control her mysterious powers. Can Scar use her stealth, cunning, and shapeshifting abilities to steal the dagger, and be back in time for school on Monday? Tamsin Cooke’s action-packed follow up to the amazing Cat Burglar.