"I wish there were two of you," you'd at, looking at your mom.
Suddenly, a copy of her appears. Your moms look a little surprised. You point at the second one.
"I wish you were your normal age, with your normal mind. But, you cannot communicate that there are two of you, or anything about the reality of this situation, to anyone outside of us three. You cannot physically harm myself or the other you."
You watch as your mom regains her height and her age. A horrified look comes over her face.
"What are you doing?! I am your mother! Why would... Stop this!" She sputters.
"I don't think so, mom. I like you as a mom and as a girlfriend. So, I am keeping you as both. I could have made it worse for you - I could have had you be both as one of you. That would've gone something like this. I wish you would tenderly kiss me, with tongue." You say.
Your (adult) mother steps up to you, gently puts her arms around you and brings her lips to yours. You softly kiss and your tongues play for a minute or two.
She pulls away, shocked.
"I could have kept you as a girlfriend. Instead I have another you to keep and play with. You should be happy."