HELP ME! (Sophomore year keeps me up.)

I am currently in my Junior year (soon to be senior in 7 weeks). I received a C first semester sophomore year. I would finish second semester with an A. My friends and really good teacher told me to not stress about it, but I am. They even told me to go talk to her about it. She is a really cool teacher who I still talk to daily, so its not like she forgot about me. My friends and teacher also said that since it was a high C (79%) that maybe she would raise it, but remember I took the class sophomore year (1year and half ago). Problem is I don’t want to look like i’m begging to get a grade up. I don’t want her to look down on me for asking for a grade raised. Do you think that C will ruin my chances in admissions. Planning to attend ASU or UofA for computer science, but will apply to some out of state schools as well.