Well, it passed the first test. Miaka didn't run away screaming, slap Mirja, or try to blast her head off with a Kido. That was all a good sign that Miaka wasn't terribly opposed to the idea of Mirja kissing her. There was the usual blushing and shy natured unsurity. Mirja had that as well, before Arianda and everything that came with her. Now she was a deviant who corrupted cute girls like this for the fun of it. Of course, they enjoyed it, MIrja never did anything they didn't enjoy, but that didn't stop them going from cute innocent girl to cute collared pet.
"I've never liked beating about the bush. I kissed you to see how you would react to being kissed. You are a girl I could grow to like, but I am not spending several weeks figuring out how you would react to my feelings. I'm a pragmatic girl with a head for efficiency, after all. And since you are still here, I am guessing you kind of liked it. As for what you are feeling, I'm guessing you've never been kissed before. When the right person does it, your body does backflips, as it is right now" she said, stroking Miaka's face softly.
Then, she moved in for another kiss, a deeper, longer, more passionate kiss. The first was only a test, but this one was a proper kiss, one that she could really do backflips on. Eventually, she broke it off and gave a coy smile, swishing her wolf tail behind her.
"And that, is you a kiss you will never forget, if you liked the first one so much" Mirja teased. She was probably not going as softly with Miaka as she should, but Subtlety was something Mirja only knew as a word, not a deed.