She felt a bit hungry, considering that she couldn't stay here too long, her mind was filled with thoughts of food.
She was used to being approached by strangers like this; having entered a few times before, she was often chatted up.
She didn't want to waste any time with a bunch of "Painting People". If she didn't disdain others' "leftovers", she might have even wanted to snatch a ready table directly.
As for paying? This group of Painting People seemed to use the messaging jade stone in their hands to settle the bill, but her own jade magic artifact seemed to be restricted, unable to function, so she'd just have a free meal, and when it came time to pay, she'd simply break the "meditation" and leave the painting, effectively "dodging the bill".
The next time she enters, everything resets... achieving the perfect freeload.