I agree with most female posters here, it was not the right response.
Popa: Even if this woman deserved to be “thrown down the stairs”, why should her ten year-old be put up to this task? The girl learnt a behavior, but who says she’ll understand when to apply it and when not to.
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To be fair, the OP came before Mincha, was probably waiting for an hour and half +. Thirst and hunger also sets in. To have all that effort and waiting be disposed because of some obnoxious oldie, is a very difficult nisoyon