Don did not take my last name when we married so perhaps I am not allowed an opinion but.....
Mrs. Kim Miller indicates you are divorced from Mr. Miller.
You are all free to argue with this rule. I didn't make it up.
The only time I will acknowledge my husband's last name in relation to me is as Mrs. Donald Scare in some sort of formal invitation way. I am never, ever Sara Scare. (Okay....my mother-in-law send me cards with that name but for her I make an exception.... ;) ;) )
So, if I were you, Kim, and making this choice...I would go with either Mrs. Andrew Miller or Kimberly Miller (omitting the title...)