You don’t have much time as Julie stands right in front of you so without much forethought you change “short” to “super” making the sentence read
“Julie the super curvy girlfriend is nervous to strip in front of you”
You accept the change and look back just in time to see Julie begin to strip. The change you just caused with the app becomes perfectly clear when the still short girl’s shirt comes off and two massive breasts barely contained by a bra come dropping out. They both had to be as big if not slightly bigger than her own head. Looking further you see her ass matches her tits, exploding outward from her hips and tiny waist. Julie had been an attractive curvy young girl before, but was now a shortstack of incredible proportions who was stripping under your direction. You stand their enjoying the view as she continues to undress and feel blood start to pool in your nether regions. Your cock has soon expanded enough for the head to hang past the hem of your robe and Julie hesitates in her actions when she notices it. With a tisk of disapproval from you she resumes and is soon completely naked and waiting for your instruction.
“I’ll get those clothes form you honey. They need to get washed now” you say gesturing for her to pick her discarded clothes up. Julie turns around and bends over to pick them up and you get a clear view of her exposed rear. The sight of the two plush cheeks and hanging boobs made you have to tighten your robe as your growing erection threatened to slip out entirely. When Julie turned back you kept your composure and accepted the clothes from her while telling her to wait for you. You then leave the room to stick the clothes in the wash and contemplate what you had planned to do.
This reality’s version of yourself was eager to see what you could get Julie to do for you but that desire was tempered by your original reality’s version’ care for your son. It is not that this version didn’t care for her son but given she had apparently been ok with fucking her son’s childhood friend and writing a book about it, she had a different idea of what constituted harm to her child. It was now your decision if you would test the bounds of your son’s relationship by seducing his girlfriend or be a good mother and get his girlfriend dressed and back to him.