Bracewell-Smith owns a 16 per cent stake in the Gunners, but the long-standing shareholder was voted out of her position in the board this week.
Bracewell-Smith told the Daily Mail: “I’m in total shock and very upset about the appalling way I have been treated.
“The board have no manners whatsoever and my views were ignored on many occasions.
“I can’t understand why I have been removed in such a ruthless fashion.”
She continued: “I had no intention of selling my shares and I was no threat to the lockdown agreement between the directors.
“I have also had no proper explanation as to why they wanted me out so much.
“It is very difficult to accept, especially after what my family has done for Arsenal for so many years.
“I am extremely upset at what’s happened and the way it has been done.”