ppaka no she won't be idle for 3 days I am sure and nobody has said she won't agonise over being a working Mum, who wouldn't?
The point is her list of qualifications,expectations,personal costs,responsibilities etc for a very low wage with no job security for the nanny she clearly intends to greatly assist in raising her two children. I am not in her shoes no, but she has placed a ridiculous and somewhat illegal advert on a public forum.
So if it is quite okay with you I will judge away.
And here is an idea: Perhaps the rest of you who have jumped on this bandwagon do not all agree with your view. It may just be possible! 
My appalling attitude to someone just trying to make it work for their family stems from the fact that these parents clearly are avoiding paying appropriate wages, tax, NI , car insurance etc whilst expecting the full "Mary Poppins " package. Not a great example to the two daughters' she is raising and not a great prospect for the nanny who lands this role. That appalled me as in trying to make things work for their family it seems they were happy to make somebody else's life hell. For little renumeration. I find that attitude appalling.
I await your approval! 
So to reiterate- the real problem here is with fair pay and terms/realistic expectations, not the rights of any parent to work or hire in some much needed help.