Daughter of the Village Chieftain, Ruri's younger sister. 

The reason why she appears initially in this abridged version, is that she's been trying to get away from her incompetent father, her pushy sister, "Cringy Chrome," etc.

But her life changes when she meets Senku...

Pretty much the exact same as the original version, the only exception is stated above.

Think of SAO Abridged's Asuna as an influence.