Need help on locating a series!

[Batty]

Hey all! A long time ago [years, I'm assuming] I came across a book I thought I'd love, but didn't have the money at the time to buy it. For whatever reason today, it popped into my head, and I can't seem to find it anywhere!

It had a purple cover, with holographic bats on it, and a witch flying on a broom. I THOUGHT it was HP Mallory, and her Jolie Wilkins series, but now im not so sure. The art style was very similar, I just can't find a clue to it anywhere.

Any help is MUCH APPRECIATED. I'm going nuts here!

[BarbaraAnn]

this one doesn't have a broom, but is similar . the writing styles are a bit similar as well.