Is the questioner considered a disbeliever due to the obsessive compulsive whispers that cause her to doubt her religion, despite her rejection of these whispers and her striving to repent from them?

As long as you dislike these whispers and are averse to them, they will not harm you, and you are upon the religion of Islam. So, do not pay attention to them, for they are from the plots of Satan. Strive against them to get rid of them. You are upon goodness as long as you are striving against them, and you will be rewarded for that.