There is a palmas FB group that is very active, you are likely to have good luck there.
Never mind I was reading the old post.
Go in clasificados and make an entry, you can probably find a local lady that will be glad to make an arrangement with you. Ask her how much she wants, then go for it if it is reasonable. If you offer, you may overpay. No contract, a nice hand shake. I would suggest 8 an hour and be clear of how many hours and days off. Not a slave a worker that as time goes by will be like family.
The reason I suggest 8 an hour is because she will likely want to work under the table and if she knows what hours she is off, she can always get another part time job if she needs more.