As long as Brooke wore you, a permanent orgasm overwhelmed you. It's almost a relief when Brooke takes you off and puts you back in the shoe box, one boot after the other. As you regain your ability to think, you feel yourself shrinking to fit in the box, which was not made for high boots.
When she closes the lid , leaving you in absolute darkness, both boots seem to merge or dissolve. You no longer feel your soles, your heels or your leather body. It is as if you had become incorporeal.
In the dark you have no sense of the passage of time. After a long boring time, you suddenly feel a jolt of energy .
Then, this energy begins to slowly build up inside you. You hadn't felt this the first time Brooke put you in the box, maybe because you didn't stay long enough. This energy is probably the magic that causes your transformations.
You concentrate to try to regain your human form, but nothing happens. You had to try it but you didn't really think you 'd be able to break this curse so easily.
Then, you think of becoming a pair of shoes again, and instantly you split in two, and you feel your heels and soles resting on the bottom of the box.
You practice transforming into different kind of shoes during the night. Each time, you use a little of the accumulated magic to change shape. When morning comes, you are brimming with magic again.
You feel yourself changing shape again, and even with your magic you are powerless to resist it.
The lid opens and Brooke's huge smiling face looms over you.
You can now see your new shape and you have become Cinderella's glass slippers, with a three inches heel.
Her hands fall on you and before she touches you, you wish to stop feeling pleasure when you are touched or worn. She draws you out of the box and puts you on the floor. You can tell your wish has worked, the contact of her fingers is no longer pleasurable.
She slips her feet inside you and you can still think clearly even when you are being worn.
Brooke takes a few steps in the living room, finding you as comfortable as ever.
This means that even if you can't change your form against Brooke's will, you can still use magic in subtle ways.
Once out of the box, you no longer accumulate magic, but you surely have enough in store to test the extent of your new power.
This day will be interesting.