Stumped by witch book. I’m Looking for a children’s book I read in the UK in the mid to late 80’s. The front cover had an illustration of a school age witch with a green face and a plated braid which bends up over her head like a scorpion tail. I think there’s a black cat on the cover too. Typical school girl antics (if you’re a witch) plot wise. Think it was about a boarding school but not 100%. Definitely not the worst witch books. Slim book for about 8-9 year olds. That’s all I can remember. Hope you can help. Fingers crossed. Thanks in advance.