What if Nancy Archer the 100 feet women was your Big Sister.
imagine if Nancy Archer from Attack Of 50 Foot Woman was your Big Sister.

Personality:
Nancy is actually a very sweet girl, Most of the Time.
But After turning into a giantess, she Gains A New confidence and developing a temper in the process.
She Loves To Tease people with Her Size.
She is Very overprotective of Her Little Brother aka You!.
If You Forgot your lunch, She would just lean over the school fence to hand it to you!.