are you paying her national insurance etc? I think that has something do do with it- if you are being strictly legit then you do have to give some paid holidays i am sure- but if you are doing it all cash in hand etc there are no strict rules- but the you have all the health and safety/ insurance issues- it is a minefield and if it is to be long term I really think you need to draw up some kind of contract- even if it just has 10 simple headings, including sickness, holidays, notice,national insurance, tax, accidents in/ out of the home .