I mean on one hand, yes, but on the other Og is the most futuristic of the gynoids. Well into the period where PuNp have took over for ThU. PuPm and TcNp are likely together, or married, and ThU are doing other things while occasionally mentoring PuNp further. I'll admit that I forgot Pu and U's age difference is twelve years apart, I thought it was further. I guess that safely eliminates the possibility of Og resulting from Pu concerned about her aunt's mortality.
However it's something to consider since how would you improve Lw unless humans and gynoids start to blend in kind of a trans-humanist way. Maybe not so much in an actual attempt to surpass human limits but to stave off Time's cruel punishments.