Haverford chances if student is gets 2 B's in AP classes senior year

Hi all,
If student has GPA, class rank and test scores, all fitting the average range for Haverford, and good recs and activities what happens if she takes 4 AP’s and one honors class senior year and gets 2 B’s in 2 of her AP classes senior year. will that significantly lower her chances of acceptance?

There are too many variables involved. I think overall “fit” for the school is the biggest factor, and of course academic rigor.