Is it a he, a she, or perhaps, an it?

I don't know, but i surely hope to not get bit.

She resides within worlds of two different physicalities, 

Weaving her dark web of even darker abnormalities.

She is a Beauty of beauties, 

But beware,

for her soul is as dark as her skin is light.

Her bosom voluptious,

she draws them in, 

she's turned her back on love,

even for her kin.

Her laugh is a tinkling thing,

light,

airy,

But if you see her,

withdraw yourself,

and do not tarry.

For her rules are her own, 

as is her heart, 

She was born the EtherWidow,

This was she from the start.