Timeskip

Later on Sarah got pregnant by John at 21 and gave birth to girl and boy. Girl is Jane and boy is Jack. And Just like mom before Sarah, Sarah got even bigger, more muscular, stronger and hotter with age. By 40 Sarah is clearly more muscular than mom was in her 40s.

And about mom she is still around, at 94 years of age she is even more muscular than in her 70s infact Sarah and mom are now equal in terms of strength and muscularity. Mom being older than most people will ever be has not slowed her down a bit, she does not look older than 21 years ago infact she looks slightly younger now in her 90s than she did in her 70s.

Both mom and Sarah has far surpassed human levels of muscularity and size. Making them look like Goddesses from a different world so huge, so strong yet so feminine. Both of them still take part in prowrestling though because of their size they cannot take part in tournaments because no one can win them. But mom got a brilliant idea, thanks to mom any adult man or woman is allowed to try against mom or Sarah, they act as a bonus opponent for competitors in which if competitor loses against mom or Sarah competitor will not lose championship.

And cause Sarah now has two kids mom is now officially a grandma

Mom: 270cm, 94 years

John: 230cm, 61 years

Sarah:270cm, 41 years

Jack: 180cm, 19 years

Jane: 170 cm, 19 years

Author's note: This is just an experiment but you now get to choose the perspective.