Well the girls stayed with us till around 3pm until their grandparents arrived to pick them up (I guess they live a long way away). They gave us an update - lumbar puncture to confirm suspected meningitis as a complication of cancer surgery. They can't start the chemo/radiation till that's sorted I think 
But more importantly, do you think that there's a point at which friends/neighbours can step in and help a family in this situation, despite them declining help?
They only called us on Saturday night because it was a total emergency and paramedics were at the door, but I do worry that unless they open themselves up to accept more offers of help, there will come a breaking point.
In the US people just show up in this situation and pitch in without an invitation, clean the house, stock the fridge with food and the freezer with lasagna and baked ziti etc. BUT I am mindful of cultural differences, the much higher standard of privacy here in the UK, so I always second guess my instincts.
DH thinks we should all keep our beaks out and wait to be asked again, but I and our other neighbours are all desperate to help. I really wish there was some way we could just secretly stock the freezer for them or just turn up with some shopping without pissing them off.