Re: LGBT thing is getting stupid
She's probably not LGBT herself but pretending to get offended on behalf of those who are!
I think most people who are LGBT realise that in the times of the owners of those properties that now belong to The National Trust folk who weren't heterosexual would be probably imprisoned, condemned to asylums, tortured or even killed.
The guides who show people around will hardly be made aware of the owners sexuality as it would have been kept quiet, unless of course they were rampantly heterosexual and producing illegitimate children who would lay claim to their wealth