"Its fine,really." Penny said as she made a futile attempt to see the bill "After all, I invited you out."
One of the benefits of working was the pleasure she got in being able to pay for things ; and whilst fish and chips wasn't quite the Complete Compendium of Charms that she'd been saving up for Flourish and Blotts for months..
"Fine, she acquiesced "I'll pay for the next meal."