What are you talking about? If it's less than the local statutory limit (quick google tells me $7500 in California, likely around what this woman thinks she was owed) then you don't even need a lawyer. File a small claims suit, show up at court, and make your case before the judge.

Now, she probably wouldn't win, because there's no contract here and Google has no affirmative duty to host anyone's video in particular nor to pay them for it. But you can absolutely do it.