You've actually enjoyed being a woman for the last several hours. It's interesting, fun actually, and you kind of get the feeling you want to experience this for longer. That being said, being in your own mother's body just weirds you out. There's the age difference, and then there's the fact that you currently reside in the very body that gave birth to and nurtured you. That's just strange. There are better people out there to be.
Namely, you think on the taxi ride home, Amber. She's always wanted to be just like your mom, so she wouldn't mind switching with you. Plus you would still get to be a woman as her, and one closer to your own actual age at that. It's a win-win situation.
You give the taxi driver a nice tip and head inside, calling out "Amber!" as you walk in. She comes down the stairs quickly, hanging up her cell phone on the way.
"Hi amb- dear," you say, trying to sound as motherish as possible. "So you know how your father's been working on that project of his in the shed."
"Yeah?" She responds, sounding a little bored.
"Well, your father has been working on a machine which swaps peoples' bodies. It actually works; we tested it earlier. So I was wondering if you would like to try it with me."
"Serious?" Amber asked, half-jokingly. "I mean, okay, but this sounds pretty silly."
The two of you head over to the shed and enter into the pods. You pull the switch to activate the machine- then it goes dark. When you come to, you look down and see Amber's brightly coloured top, her sizable breasts, the tips of her long blonde hair. The switch worked!
"Mom!" you hear Amber say in her new voice. You exit the pod, feeling slightly weird due to having a new body and all, and see Amber looking back at you excitedly with mom's face.
"It worked, it really worked!" she says. "Oh my god, I'm a model."
"I thought you might like that dear," you say, still trying to pretend you're actually mom. "Tell you what- I've wanted to take a break from my career for a while and just relax. Why don't we stay like this for a couple weeks? You can be a model and I'll get to be a teenager again. It'll be fun."
"Absolutely!" Amber hugs you tightly. "You're the greatest mom!"
With that she runs out of the shed, leaving you with a devious smile on your face. This is pretty sweet. You'll get to be her for a couple weeks, see what it's like to be a beautiful and popular woman for a change. Meanwhile, Amber gets a little wish fulfillment, and mom gets her break from life by being you. All three of you win!