SOLVED. YA Fantasy. Girl has a jinx/ bad luck which appears as a shadow. Adventure with her friends. Two witch sisters. Spoilers ahead. [s]

[Kanyinsola]

the only thing I remember is that the main character has a jinx and it appears as a shadow in the book and at the end, that shadow turns back into her father who some witch cursed a long time ago. The main character is a girl. In the book, there is also an adventure that she and her friends go on. And there are like two witch sisters and they keep their toenails in a jar.

This might be a false memory but I also remember the drawings being Roald Dahl like.

[Becca]

The Secret Order of the Gumm Street Girls by Elise Primavera.

[Kanyinsola]

Thank you so much! That exactly what I was looking for!

[Kris]

Glad you found your book, Kanyinsola. (I removed the spoiler from the header/ topic title and added a spoiler alert.)