When she jumps on her cauldron, jump up and hit her.
She then turns into a frog (you sometimes get hit yourself).
when she goes right, do the same. Then go the other way and
keep hitting her. When you have defeated her, jump through the
mirror.

Hint: Clearleaf Forest: Defeating large
Hoodlum
On the last level of Clearleaf Forest. when you battle
the large Hoodlum on the mechanical legs. run over the thing that
looks like fire. Three blue lines will appear. Do this three times
and a power-up will appear in the middle of it. Get it, but remember
that the Hoodlum can destroy it. When you get it, you must hit
him three times and he will die .Then a group of hoodlums will
enter the arena. You will get on the legs and squash them. then
go to the doctor.