To be honest, I am happy to be Mrs his first name, his last name. Also happy to be Mrs my first name, his last name.
However, if I wanted to be Ms, I'd expect to be given that choice.
If men can be: Dr, Lord, Major, Captain, Reverend, Sir, etc., and women can be Dr, Lady, Dame, Reverend, Captain, etc, I really don't understand why people can't also cope with Mrs, Miss, Ms, or Mx for that matter, in addition.
It really isn't hard to have the options and to use them.