Helping an old lady

Does a 91 year old widow whose only income is R7200pm from an Old Mutual investment have to submit a tax return? I remember hearing that some people no longer have to submit tax returns and an old friend is not sure whether her tax consultant is doing anything.

She is below the tax threshold for her age (which is R129,850) and therefore no need to submit a tax return as she won't be paying tax.

Thanks you very much for such a prompt response.

Only a pleasure!