Cecilia would let out a loud yelp and buck forward in the woman's lap from the spank, she though the swat would land right on her cheek but it went a little lower instead and hurt more then she thought it would.

"I'm s-sorry ma'am!"

"As you should be." Helena coldly replied "Disobeying to your master, and not only that, but to your master's FIRST order. Shame on you, child."
She raised her hand again, and let it fall to the other sit spot.

The girl would hand her head in shame, she had intended on trying to be the best student she could be but she wasn't expecting to have to do something that embarrassing. Another loud yelp would come from Cecilia and she would again try to kick her legs but still could barely move at all.

"O-Oww..."

The sorceress raised her hands again. She had the intention to teach this young girl the price of disobedience. It was nothing new for her: every apprentice of her soon or later ended on her lap, and this one was not an exception.
She let her hand fell on the right cheek, in a upper part then before, and immediately after, quick as the thunder, slapped in the same way the left cheek too.

Cecilia braced for more spanks, she had no idea how many or how long this would go on for but she was hoping the sorceress would go easy on her for her first spanking. That kind of thinking was probably misguided especially since the two had known each other for about ten minutes and the young warrior was already being punished.

The rapid spanks to the upper part of her cheeks did hurt less then on her sit spots but they were still very painful, especially the second swat as she had no time to brace for it.

Helena raised her hand for the fifth time, and let it fall down right in the center of Cecilia's bottom, with a full strength slap.

With that much harder spank landing dead center between her cheeks, the teen would let out a much louder cry of pain and attempt to reach back to cover her rear but only managed to lift her arms a couple of inches before letting them drop back down.

"P-Please stop m-ma'am... I'm s-so sorry I'll l-listen to you!"

"Good girl." Helena said "I decided for a short and intense spanking, since it was your first one. And it seem that the count of slaps was perfect."
She gently patted her bottom, adding "Now stay still. Not that you have a choice."
With those words, she pulled the cheeks apart once again with her fingers, and put a thermometer in Cecilia's behind.

The teen was more then happy to be done with the spanking, she immediately tried to get up off the Helena's lap but the magic was still effecting her. Then she heard what the woman said and felt her cheeks being parted again, she'd whimper again and let out a very loud gasp as the thermometer was slowly pushed into her backdoor. This was something completely alien to Cecilia and she hated it.

"H-How long d-d-does it have to s-stay... in t-there...?"

"Three minutes would normally be enough." Helena replied, holding the thermometer in Cecilia's bottom "But since you've decided to be such a baby about it, five minutes total to be sure."