The damn sunblock!

As you are paid for the babysitting, you should have put the sunscreen on as instructed. Not up to you to decide when the boys are old enough to do it themselves. That's up to the parent.

My daughter just left, we chatted. I guess it boils down to me being a bit sensitive to being asked to do things, as well as, I told her that her managerial ways got to me and I also tried to let her know that grandma's don't like rules and being tired that day, everything became bigger than it should.
I did feel very badly quitting on them and leaving them stuck. That part made me sick, I did over react with that, but, at the time, I felt as though my efforts were not appreciated. She told me how much she loves me and appreciate all I do for her family and that she just asked about sunscreen.... So... I am on board again folks, I will babysit and it will be on a part time schedule soon as per her new schedule.
I want to thank you all so very very much for taking the time to comment and offer your suggestions and ideas when I needed to talk to other g ma's.

Thanks jinglebellsfrock,
It's not that I decided they were old enough it didn't get done because I forgot! Last minute, I asked them to apply some, but they don't apply accordingly. In my defence, yes, I was sensitive about this for some reason, I said they should be old enough to do it. Which frankly I still believe.... Ok, I'll can be there and watch, which I usually do when I am with them all day.
I know what you are saying, however, in real life when things get hectic, things get missed, and just thought the conversation about it got a little too serious.
Anyway, thank you for your comment and yes, I will be more aware of doing the one duty which means a lot to my daughter

Phew, I'm glad you're all sorted out now, Grandmama123. Family fall outs are always upsetting.

That is great Grandmama123. I am glad you and your daughter were able to reach an understanding. I don't think it is a good thing to be a perpetual nodding dog, so perhaps you have struck a blow for respect? to you, it sounds as if you are doing a great job.

You're a star for doing it all. Couldn't do that early start, me!

I am glad it is getting sorted now, it must have been very upsetting.
You have quite a lot of responsibility G123; particularly having charge of two lively boys - and a toddler with a swimming pool in the equation too, so you need eyes in then back of your head constantly. It 's a very long day too.

I think that at 8 the boys should be encouraged to start taking responsibility for themselves, start thinking about the consequences of actions or non-actions, although they will still need help and reminders.

The Australian advice is: 'slip, slap, slop,seek, slide' (t shirt, hat, suncream, seek shade, sunglasses) and the children all have hats as part of their school uniform. However, last year there was a case of a child who had developed rickets in sunny Cairns because his mother had never let him outside without sunblock and a hat. So they do need a bit of sun, perhaps starting with five minutes a day working slowly up to 20 minutes a day on bare arms and legs.

As Greyduster says, years ago there wasn`t the same worry about sunburn and skin cancer, and I didn`t put sun cream on our kids, and don`t remember them ever getting burnt.
I was paid a few years ago for minding various grandchildren whilst their parents worked, but it was rarely for more than 7 or 8 hours a day, I was paid the princely sum of £1 an hour, but it was a hell of a lot less than a child minder would have charged, and helped me to save for things like Christmas and holidays.
Grandmama123, I`m so pleased that you and your daughter have sorted things out.

That's a relief. It is awful to fall out with nearest and dearest.

Thanks again everyone!