"Hey, um... are you okay? Here let me help you." You ask and come to help your girlfriend in the form of your mom. And then, she looks at you and says: "I'm fine, sweetie. Thank for helping mommy."
"Wait, what?" you ask as you're confused.
"I...I'm sorry, sweetie. Did mommy say something wrong?" your girlfriend speaks again as she acts just like your mom.
"What the hell is going, why is she act like my mom?" you thought yourself. "Umm... "mom", why don't you lay on my bed and rest for bit, I have to see some of my problems on my... project, my science project."
"Okay, sweetie. Whatever you say." your mom... er... no... your girlfriend in your mom's body reply as she's laying on your bed and rest. With that, you go and check the booth to see what is going on. And now you finally understand what happened, you realized that you didn't just turn your girlfriend physically, but mentally into your mom, and also you forgot to edit the mentality setting. So that's why your girlfriend acts like your real mother did. But in the end, the booth is working somehow. Then, you stops looking the problem of the computer and come to your girlfriend in your mother's form with her naked body and say:"So "mom", How do you feel?" you ask.
"I'm fine now, sweetie. Thank for asking. How is your project doing?" you girlfriend/mom asks back.
"It's fine, I just got a problem, but I already fix it." you reply.
"That's great, sweetie. I just hope you didn't push yourself too hard." she answers.
"I don't worry, mom. And I'm also worry about you." you say.
"That's really kind of you, sweetie." she smiles as you both look each other. With that, you both leans closer and closer as you both kiss in each other mouth. This is kinda weird and incest that your girlfriend is your mother, but somehow the kiss is good and passionately. After that, you both break the kiss and she awkwardly asks:"Teehee... wow, that was... kinda a great kiss, wasn't it?"
"Y...yeah, you could say that again." you answer and also awkward in the situation. "Umm... so do you think it's wrong to kiss your own son?"
"Maybe, sweetie. But to be honest, it feels right, somehow." your girlfriend/mom replies.
"You think so?"
"Yeah, and I think we meant something together, like a lover." she quickly answers, and you realize that your girlfriend still have feeling for you. "So, sweetie. Do you wanna... um... make love with your mommy?"