Thanks everyone for the brainstorming! I really liked the idea of using foreign words to swear, but in the end, I chose to go with a different approach since it may be a while before I do a segment that tells her backstory and in the meantime it would be slightly confusing for the reader/viewer. So I'm taking a different approach... blending someone elses' idea of using a longer phrase and then following up with a shorter version of it with a thought of my own, I came up with this. "I'm not charging enough for this job... and this is why." The panel below (above?) is just a rough mockup :) Kinda testing out the character before I throw her into the "real" situations. Again, thanks everyone for the ideas!