You do your best to talk some sense into her. to get her reasonable. but she is always agitated. whenever you or Brooke see her she asks "can I be a cock now?" whatever her Ex boyfriend did to her, apparently it did a number on her. well, it laid the groundwork for you and Brooke to finish the job.
You head to the magic shop one day and explain the situation o the lady running the store. asking for advice.
"Sister troubles? hmm... well... I wouldn't know how to help without meeting her EX boyfriend first. Magic is very personal, very different from one mage to the next. two different mages could use very different incantations and focuses to achieve the same effect. So without meeting this person I wouldn't know how to restore her mind, or if it would even be possible. especially considering you used magic from a secondary source, the rings, to abuse it further.
You let out a sigh of disappointment. "so what do we do? she says she is planning on finding a way to become someone's dick come hell or high water."
The attendant considers it for a moment. "then perhaps you should keep her safe. letting her tamper with magic on her own could get her hurt. and it will still be a long time before I can restore you two to regular order. this may be what's best for you three." however Brooke is not happy. "She can't really be suggesting we turn her into your penis forever!? she screams in your head. but the shop keeper says "I am. her mind will only get worse in this state. her desire to me a male sex organ will only grow... I'm sorry."
Brooke cries a little inside our head. and you reassure her. "I do have something for you though, this just came in." says the attendant. She hands you a piece of chocolate. "get her to eat this. normally they are used to prevent such psychological damage. however hers is already present so nothing can be done about that. but it should stop her mind from becoming even more simple, unless either you or her want it to."
You thank her and head back home. Kira is waiting for you.
"Please Micheal, I need it. I need you to turn me back. It wasn't fair to turn your dick into a person." that's really worrying. she hasn't been refering to herself as 'kira' but 'your dick.' as far as she is concerned, you didn't change her back, you turned an ordinary organ into a full human woman and she wants to go back to normal...
"Kira, eat this." you say as you hand the chocolate to her. she ooks at it and sniffs it. "what is it?" the only answer you give is. "if you really want to be my dick forever. you'll eat it." brooke sighs resignedly as kira picks it up. "really? forever?" you nod. "so that ring? the one that changed me... you will throw it away?" you nod again.
she gobbles up the chocolate faster than you've ever seen anyone eat. then claps happily. "Cock is ready owner!" you drop your pants exposing brooke to the world. "Goodbye sis." brooke says in your mind. Kira grabs your dick and says 'switch places'then brooke is in your arms.
"Micheal... I can't believe we just did that..." she says "i know, but it's for the best. being human was starting to drive her mad." brooke looks at you with sad eyes. "why did we push her that day? how could we have been so cruel? "hey, we didn't know what happened to her..." "what do we do know micheal?"
"we'll figure out our next move..." you say, taking off the ring and throwing it away. "since her mind is safe maybe we can fix her someday? until then she can have what she wants."