Pre school teacher - what to pay her for babysitting or Nannying in school holidays

[majafa]

There is a post on here very similar in topic but the children in that thread are very small.
Unfortunatly, I will be returning to the real world shortly and having to find a full timeish job (was childminding, but only mindee has given notice and there does not seem to be a lot of minding work around at the moment)

I have a neighbour who is also a pre school teacher.
I have asked her to do 2 hours after school babysitting which at the moment she is thinking about, but will also need to ask about school holidays.
Her own children are in their late teens and were there a problem, are only next door but one.
Now my boys, 1 is 11yrs and spend a lot of time with his best mate and at his house or going to his dads (DH's)workshop and 'helping' there during the holidays.
I also have a 8 yr old, who needs most of the care, which will be in our house not hers.
Do I pay her Nannying rates? or,
Babysitting rates?
Does any boby know what the going rates are for nannying and/or babysitting in a small ish village in Hertfordshire?
Can anyone help?

my nanny and bs rate are the same

i see bs at sitting on bum in evening watching tv with children asleep

nannying looking after children during the day

so if you do pay diff rates then you need to pay the nanny rate

I'm in North Herts. A friend of mine who is a nanny gets paid £450 a week. She does 3 days of 8.30-3.30 and 2 days of 8.30-7 (3 children aged 2-10). I assume that's fairly standard here as all the nannies locally are great friends and their employers likewise so they'll all be quite clued up on who is paying what.

How onerous will the job be, in all honesty?

If your DS needs constant supervision, you should pay nanny rates.

DS's are 11 and 8, as in my 1st post,the eldest tends to be with his mate most of the holidays or at his dads workshop, and the youngest, left to it, I know, would be quite happy to stay in his pj's, playing on the wii or his DSi all day!!
I really wouldnt expect her to do anything, unless she wanted to, does that sound bad?
which might be somewhat boring for her!
Hes 8 1/2 and in my mind unlike say a 5yr old doesnt need constant supervision, he just needs to know theres an adult around if he needs one, he much more mature in most ways than his 11 yr old brother.
I was thinking of leaving a packed lunch or something cold like a salad or somthing in the fridge for her and the children for lunch during the holidays.
sorry to be vague,