The desire to want her to leave and have this finally behind you is totally normal dude. YOu have been in the house together for a while and emotionally I am sure you need a break for it.
Keep doing what you need to do for you bud.
Oh as for her cooking for you...I would not say a word to her. I simply would not eat it. She'll get the hint.
Chin up dude....it does get better man!
Eric
"The difficulties of Life are intended to make us BETTER,not bitter". "Fear is a prison, where you are the jailer. FREE YOURSELF!" "Life is usually all about how you handle Plan B." - Jack3Beans