I’m not a horsey person but daughter has been riding for a little while. It seems like a very nice, quite posh stables and the horses seem well looked after. However today one of the staff threw a grooming brush at a horse in a stable because it was annoying her banging on the door she then waved her arms in the horses face. The brush didn’t hit the horse or go that close. Is this a normal way for horsey people to treat horses?