Ex threatened to take pictures of her house into court along with a picture of of the new spouse's house to prove she was living far below what conditions he was living in.
She really likes to mess with ya'll. Your husband's ex-wife is
THREATENING to take pictures of
YOUR house that
YOU owned
BEFORE the marriage and show them to the judge to illustrate that your house is nicer than her's?

I would laugh in her face.
As Lee pointed out, unless your hubby is using you to launder money / assests, is underemployed and living off your wealth, being just generally shady - then her threats are just another tactic to get your goat. By the sounds of your posts she has your goat all right!!!!
As to the ex bringing up you and YOUR business in court - the best tactic is for you to avoid going to court with your hubby and avoid all contact with her. I know you probably try to help out your hubby with the visitation and all that - but really - it is much to your benefit if you dissappear as far as the Wicked-Ex-Wife is concerned.