I remember watching this anime (I believe a movie) on the Sci Fi Channel a long while ago. I was a science fiction/alien creature type one and I want help finding it. Here are some facts:
1)The main character was a woman with darker kind of brunette haired fighter
2)She had a Artificial Intelligence helper that looked like two tops stuck together kind of hourglassish
3)There was a creature that was very organic and alien-like that would change people into things like it and chaos insued
4)Someone she cared about (a white haired "young" man) was enveloped by the creature and it controlled him, so she had trouble fighting it because she didn't want to kill him, she called him "brother" I think but I think he wasn't her brother and she actually loved him
5)There comes a point when he isn't completely enveloped by the creature and he asks her to kill him, but when she does the creature doesn't die as well and continues fighting.
6)She has the final battle in a desert that burns people up when the sun rises on it.
7)Her AI helper warps she and the creature there, making the creature think that it's on another planet, but they are just in the desert.
I can't think of anything else. Please if someone can help me even narrow it down that would be great. Again it was shown on Sci Fi channel a long while ago back when they had anime evenings.