Need an advice here.

I told my woman best friend that I choose to be with her. She said "no" all the way. After a month she never demonstrated anything but her body-language screaming yes. At the end of the "i leave you" conversation she asked me if thing would change as friend, I told her "no" like million times. The point is she is acting normally but she still seems preoccupied that I am acting weird cuz I didn't stood with her all the time while she finish h.w.. She obviously value the friendship but there is that idea that she does like me very much.

Do I give her time or ignore her for a while? (ignoring seems to make her lose control of herself)
Stay with her as normal friend or leave her cuz she said "no"?
Do I just work on myself and building my lifestyle and forget about her?

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In the game, no pain, no gain.

Focus on you and your life.
If you value the friendship be her friend but don't let it change how you operate.
If anything target other girls, don't stick around just because of an idea, she may just want the feeling of having you without having to be committed to you.