Maid Uniform ---> Loyal Witch's Attire

I fume. This cursed mirror still has yet to release me, and its power shows no signs of waning. If only I weren't stuck here, in this stupid 'maid--

--The world reels in a kaleidoscope of colors, as something gleans my thoughts, and - with malice - presses upon them. My head aches. Fury rises, along with some foreign, near-forgotten emotion I can't quite place, only for both to be carried along and mingle in the storm --

-I'm not even a real witch! I never should have 'borrowed' that outfit to spice things up for that guardsman, but no, I had... hadn't I? I... My temples throb... I had, of course, stolen the dress - it was simply left in the wash by some maid or other. I happened to be there for... some reason? So! I took it. I thought it'd be fun, but no.

No, her highness - the fool she is - she mistook me for an actual witch she'd yet to meet! What idiocy: These are supposedly her best friend's clothes: You'd think she'd know them by sight. But no, no she did not - or perhaps she no longer cares, after that demon shook her pretty little vapid head around that night.

Either way, she took me to her chambers and demanded I use my magic to create an interesting night for her, so I was forced - forced! - to play a role I'm wholly unsuited for. Some bogus words and a flex of what little control over magic I have, and...

Wouldn't you know it? Something happened! A man appeared: fell right from the friggin' air onto her bed. She was ever so greatful I just had to stay...

...grateful enough to give me an easy out when she stormed out alongside her paramour to visit the king and simply not let the others know I was here, or call in any staff. Except there are still staff about, so what was I to do but stew in the woman's damn magic musk, waiting for an opportunity to leave without being spotted.

It was boring, and humiliating, so I snooped around and... mirror. This damn mirror! If only I really were a Witch, rather than merely wearing one's clothes, I could perhaps figure out a means to control it.

And then leave!

(dominatrix, wavy light-green hair, apron, loyal witch's attire, surprised expression, medium breasts, hairband, stockings, modest skirt, standing in a castle bedroom)