I wish to know more about Saya no Uta. Would someone kindly provide links or information? I have no idea who she is and already she's made my top list.

Shes a character from the eroge titled "Saya no Uta" made by Nitroplus in 2003.
Wikipedia entry (English): http://en.wikipedia.org/wiki/Saya_no_Uta
Official site (Japanese): http://www.nitroplus.co.jp/pc/lineup/into_06/index.html

I'm worried about what she's eating.

saya eat cat

she eat cats, dogs, your best friend's girlfriend, and some other delicious fruit-like lump tasted like Peach or Pear.