Polite. She was definitely polite, Betty decided. A mark in the good column for this girl, no matter how much grace she lacked. Though, from the speed of her movements in standing, it would appear she had a bit more grace than she gave herself credit for.
Grace more along the line of being surefooted than of being gentle in movement. Even if she fell, tripping over apparently nothing, she still had a level of grace to her.
"You are welcome," Betty said, smiling at her. "You should be careful, you don't want to ruin your new shoes before you've had the chance to wear them." Ruin was a rather subjective term in this instance. Betty was already thinking of scuffs and scrapes on the flesh of the shoe, rather than the natural wear of the soles.
She liked it when her shoes looked nice for as long as possible.