I found before moving, that my kids, if on a halfday from school would come home in fits of irritability. They've since changed the entire school system to feed the kids lunch before sending home. I was highly vocal last year, when we fed before early snow release about what a positive difference it made in my home.
I know some are big about not snacking in between, but as sanity saver, snacks are always available in my home.
My kids won't nap, haven't even since diaper days, barring the toddler years and infancy.
I think it's wonderful she's bonding with you. Being thrust into a huge responsibility of a child, without gradual build up, is no small feat.
How are YOU holding up? Remember, you need to have time for you, to recharge in order to give back.
Thinking warm thoughts your way.
To add: my voice about food was profound, as I feed a significant amount of the towns youth. My principal, last year, felt my kitchen was the ready one, to do the impossible last year before releasing the kids home. We double timed the whole event. My school revamped it's entire schedule once a week. Food is key to behavior.