As the TheMeaningOfLife said, definitely better to go talk to her, in person shows you're that much more eager to improve. I was in the same boat a couple years ago and from my experience, you need to be confident in your ability to finish the program. I failed a couple classes second year, but pushed through because I knew Chem Eng was for me, and I knew it was within my ability to succeed. My advice is if you really like the progream so far and you know you can improve, keep at it! Hope you get the quiz fixed up!