But now looking for funding

Are there any grants/fellowships still open? It seems the dates all passed in April.

I am an American (not a minority) older woman going to school in the USA

Otherwise, I will have to defer a year

Did you talk to the law school to which you were admitted? Certainly they'd be able to give you a sense of what's still open. I know that there are specific application deadlines for some programs, like NYU's taxation LLM, by which you have to apply if you want funding.

External funding sources are an entirely different story, and will depend on the scholarship.