Start with the attire

"Firstly, finish putting on your dress. I will judge you then."

Puzzled, but no longer afraid, Moora finishes putting on her dress, it's not like a ring can hurt her. Like most clothing from a peasant, it's brown and tattered. Tears and holes stitched repeatedly, fitting snugly on her body. A bit showy, but efficient for working in.

Moora stands in silence for a moment, "I did what you asked, is that all? I'd like to make it to town before evening."

"Hmm, not a fan." Moora suddenly feels her dress start to dissipate like wet paper. She desperately attempts to hold it together, but it's no use, one of her only pieces of clothing are ruined, and now once again she stands stark naked on what should have been a simple laundry trip.

Her cheeks reddened, she calls out "What? Was this you? Why would you do that?"

"No, no good. Try on another one." she hears. Moora is already about to grab the closest one to her, her nightgown out of desperation but is interrupted once again.

"Actually, I can already tell that's not going to work either." And this too dissipates, leaving her with only one dress. It's her newest one, she bought it only a few months ago with the bits and pieces of extra money she's saved from working. It's still in good enough condition, no wear or tear yet. Not bothering to question her situation, she slips into her favorite dress. If she ever had a reason to go out to someplace special, this is the dress she'd take.

"Acceptable. For now, put me on your finger."

"Why would I do that?" Moora questions.

"Simply follow my commands and you will see a world you never thought possible." the voice replies.

Moora obliges, slipping the ring onto the middle finger of her left hand, it seems to fit perfectly. No, that's not quite right, it's almost as if it's adjusting to her. She decides to see if it does that with all her fingers, but notices she can't remove it.

"Hey, voice, is this supposed to happen?"

"You will address me properly as Celestia, and you are now my follower. Understood?"

"What? I don't remember agreeing to be anyone's follower."

With a sigh, Celestia speaks "I can see you've worked many years to get where you are. You may be doubtful of me now, but for now, I will give you a gift."