ok look I may sound bloody rude here but it's more blunt in a good way
I had a similar issue my daughter was 5 I had just moved 200 miles knew no one and was having a home birth with panicking midwives freaking out at any available moment and hubby shrugging and me so stressed out I was ready to go find a quiet bush and go move there!
anyway as it turned out my daughter slept through the birth and we planned to be out of the game for a few weeks but in the grand scheme life went on no one was scarred for life as a result of taking life's chores in shifts.
ask yourself these questions?
do you REALLY want your sister to come over?
if not say thank you your offer is great but I think that it's better if you stop at home and come over when we're settled and she can come over for a period of time she'd like when she's ready and not obligated.
YOu must realise she's probably terrified of feeling overwhelmed trying to look after your brood with a scared 6 year old
yep they are very independant but in a whole new environment not even being understood?
it would be really quite wrong and putting upon.
here's the rude bit - why do you need help?
if your kids go to school then I'm sure either someone goes past who can stop and take them in the mornings and afternoons
they are capable of getting dressed especially if you start laying out clothes now drawing picture instructions of what they need pay for school meals for 2 weeks before D day and 7 weeks after - even if they aren't great they will cope
pre freeze meals like bolognaise chilli shepherds pie and what not then they just go in the micro and served with whatever is kicking about.
and as for the sheer exhaustion well you take it in shifts to share between you.
You could even offer your lodger free board for the month for his help with shopping etc
in the big huge picture if you are getting help and someone doesn't do something exactly right will it TRULY matter?
You probably don't realise it but you are seeming quite spoiled right now.
We all have personal coping things and we just get on with it and if it goes to shit you shrug and say yep that was shit!
Everyone seems to be running round after you
and you seem to be sticking 2 fingers up at them be TRUTHFUK with what help you need
so if you're knackered just say so if you aren't managing with shopping or something say so if noone knows they assume the help.
either compromise on the help you think you need or they will all turn round and say bugger you!