I have three girls, never had a problem, I have establish my self to them as the pack leader, since the beginning when I saw any little behavior I will corrected, Melody just lately starting to be a little possessive of her daddy

she will not bite, growl or anything she just get in front and push away Phoebe or Shayna when daddy is give them attention, I think is daddy fault, because Melody is always in his arms when he is home lol, I have to tell him that he need to correct her before it gets any worse, but I don't think it will Melody is submissive temperament, but you never know