Naomi - Many previous posts including this one, have drawn a response from you that people who are upset by appalling behavior need to jolly well shape up, have a run out with the dogs and a rundown with a damp copy of Country Life.
Not everyone lives in Enid Blyton's world, and if people are subjected to bigoted rudeness, they are entitled to be shocked and upset, and not made to feel that the reaction of others is their fault as well as the original situation.
Lady Hussey acted with inappropriate rudeness when not receiving the answer she felt was her entitlement, and has had the grace to acknowledge her bad behaviour and apologise.
Quite how long people on here are going to continue, not only to defend her dreadful behaviour, but make the innocent person the cause of the furore, remains to be seen.
Collect your blinkers on the way in please...