Middle name choices for baby girl

I posted a while back under different account but do not wish to do that again so posting as throwaway. Anyways, I am trying to figure out which middle name sounds best with Thea (our top pick for baby girl name). We are choosing a family name, and this person was Violet Marie. At first we thought Marie, but now I am starting to think Violet because if baby does not like Thea, Violet has more possibilities/nicknames "Vi" , etc. Our last name is scottish decent, share with famous general Douglas M.Please let me know what you think sounds better as well as what you would choose of these 2 possible middle names.