Well, she was that frightened, she'd always been such a gatless girl, that she didn't so much as know how to spin, and what was she to do tomorrow with no one to come nigh her to help her? She sat down on a stool in the kitchen, and law! how she did cry!
This content is from "Tom Tit Tot" in English fairy tales.
I know the meaning of "law" as "canon" but I think the meaning is unnatural in this context. What is the meaning of " law" in this case?