They may already get discounted parking ? Can you ask the parents as a great idea.
Also is there a coffee shop...can you buy a 5 or 10 coffee card - coffe is your friend when stressed and sleep deprived.
Can you cook a few meals and drop them off ? I know you live an hour away, home cooked meals are great.
My daughter spend a lot of time in hospital in her early days (undiagnosed) do you know what was the nicest thing - the friends that came and sat with me some nights and just let me talk, vent, cry. The ones that also bought dinner and a bottle of wine were pretty good too.
I think your idea is lovely. I was so tired and yes looking after me was last priority. I would look towards some healthy snacks too, and some chocolate