"So the kid talk is something big. We bring someone into this world and if we aren't prepared we can screw them up pretty bad which is why I propose an experiment." Barry said
The little young Jill asked "What?"
"A simple experiment that'll take place over two weeks. I take care of you as a child for a week to simulate when you need to go on a business trip for a little while... and then You take care of me as a child for a week to simulate when I need to go out on a business trip. Then knowing what it's like to take care of someone and how the other takes care of children." Barry said smirking as he slid Jill's age lower.
The shrinking Jill cringed a bit as her chest fully flattened and said "Well... that explains why you're shrinking me like this, but won't our adult personalities get in the way?"
Barry said "There's a setting to adjust our personalities, and reality... So that shouldn't be that big of an issue. Personally I'll be doing my test with you at three separate ages. As a baby, as a little girl, and as a not so little girl."
Jill sighed and said "That's a crazy idea..."
Barry said "Well this is crazy technology" he pressed a button and Jill found her bra which was limp across her chest suddenly filled up and was threatening to snap off her bra.
Jill didn't say anything for a bit as she thought and said "First you better not try to be a horrible parent or child on purpose!"
Barry held his hands up and said "Hey, I'm not against having a kid. I just want to make sure we're cut out for it right now."
"Alright... then Second... I can tell you are very interested in playing around with that thing in bed. Two weeks without sex may be a little too much for you now that you've got that toy so... How about you make me a woman again and I'll show you a good time?" Jill tried to say it in a sexy sultry voice with a sexy look in her eye like she usually did... But she was a little kid and while her breasts were giant her voice was too squeaky to really be sexy and her features were too childish to really turn him on.
Barry chuckled a bit and said "Sure sure, we'll satisfy our urges and then see how this experiment will turn out."