The shopkeeper has seen a lot of children come and go here, but at this point she is also charmed. They may be getting a discount.

Furiosa presses on the toes of the boots to see if there's any room in them for her to grow, grinning at her enthusiasm. "Good! Stripes and sparkles."

Do they match? Who the hell cares? It'll keep the child warm, and she clearly likes them. That's all that matters. Furiosa ruffles her hair gently--it's becoming a habit, she's clearly getting attached--and plucks a pink flowered bag with a water bottle in it off the counter. "This is for you, too. You should never be without water, even here. I'll fill it up for you after we leave here."