if you don't want to open the discussion with your board of pharmacy as to why the preceptor wrote those things, do not submit the hours and just work 240 more hours (or however many you would lose by not submitting the hours at the previous location) with your 2 preceptors that like you. It may be 6 additional weeks, but at least you won't have to defend yourself. Unless the board has taken action against this "bad pharmacist", I would feel that they would believe the word of a licensed pharmacist over an intern if it came down to a he said/she said argument. Now if you have documentation or evidence clearly going against what she wrote (such as prior, ongoing correspondence stating your wonderful work with her) then you can go forward submitting the hours (along with your evidence), and she will have to explain her conflicting evaluations of your work.
As others have said, utlimately you need to do what you think is best. No matter what is said on this forum, it is not something you can stand on and cite that "well SDN recommended I submit these hours". Asking over and over again will only get the trolls to fuel the fire around this thread.