Hannah grinned when she read the owl response. She put Lucy into her playpen to keep her amused while waiting, then went about writing back to him. The charms would keep the food tolerable for a bit, but she didn't want to push her luck. Fresh food was simply that and no charm could quite mimic that.
Neville,
To be honest, this is kind of spontaneous on my part. I'm just thinking a park - any park - to enjoy the weather. How about you stop by the flat and we can all go somewhere together?
-Hannah
This would help with carrying the food as well since Hannah knew taking her daughter, her daughter's bag of toys and necessities, and the picnic basket would prove a challenge for her. It wouldn't be an impossibility, but it'd be enough of a fuss that it would be simpler to get Neville to the flat to help out.