"Heh, this reminds me of a time a boy went around breaking pots at my town for fun. Would have liked him to be here right now" she looks around checking their options. If there's not many people around watching them, she will try kicking the wall. (most likely with no results).
If nothing happens, she will mutter "ouch ouch ouch" sigh and sit against the wall rubbing her feet while trying to think if they missed something on the painting.