My question is did I do the right by helping her out? She was negative throughout the interaction. I let it not bother me and concentrated on getting the job at hand done.
You did the right thing in helping. It directly conflicts with the negative image she is trying to build of you. If you had done less it would have validated her illusion.
I don't think it will score you any points, but it's not digging the hole deeper. Always take the high road, and do it for the good feeling it gives you.