Tim decided to have some fun with Jenny. He selected her age to 16 and Kathy's age to 0. She started to get taller. Her hair grew down her back and stopped at mid-back. Her face become more teenager-like. Her chest changed into 2 B-cup breasts. Her baby clothes turned a pink tank top and white miniskirt and her diaper turned into a pair of pink panties.
Then Tim noticed Kathy was coming up the stairs anymore.
"Thanks for staying by me Tim" Jenny said "I don't know what would happen if Mom found that we had sex last night"