I googled the tattoo and saw that she has "должно быть" as the first line and "чтотобольшее" right beneath it, yes, exactly like that "чтотобольшее", as one word, no spaces. I've also noticed that both lines are pretty much the same length and they're almost perfectly aligned. So I think it was just a style choice. But again, her "д" in "должно" looks a lot like "а", so I'm not ready to write off the theory that she just got it all wrong.