elementary book (2015 area) about a girl that was a witch? cover art was cartoony and had a tower if memory serves right. was a huge chapter book with like 20-30 chapters in it

i seriously can’t remember this book at all. i know it occasionally had images but it wasn’t often. i got it at my schools library and remember loving it. it was a big chapter book but im afraid ive given all the info i have :(