Alexander was watching and listening to the conversation until he saw what the girl who ran past him try to do. He quickly ran up in front of Alistair and pushed the girl back and he said to the girl, "Sorry but you can't possibly believe that you could actually attack sir Alistair like that now did you?" 

He saw her intensions when she bared her teeth at Alistair and try to take a snap at his neck. Alexander bared his teeth at girl who tried to take a bite at Alistair's neck and said to her, " Now if you would listen to what Alistair has to say about your friend over there with Maria, because we don't know why he is over there, maybe you would know why he's over there in the first place and besides it's your fault you came in here on our turf, now stand back and try not to be foolish girl."