Got a C+ on ASTU term paper

I expected at least a solid B. That's worse than my polisci term paper, which I expected I'd get a C but I ended up getting a B.
Got the paper back today and realized my term paper partner added in several unnecessary crap which the prof took notice of and proceeded to take a shit ton of marks off. Her comments basically implied that the entire paper was child's play and drawn with crayon.
I've already emailed her expressing my concerns.