I don't know if you got any responses from the other thread, but from your description she's your "personal attendent" I am that in a friends wedding in October and I am just wearing a black dress (the bridesmaids are also wearing black dresses). She will most likely be my personal attendant in my wedding and I will like to include her in photos so I would like her to wear a dress in one of my wedding colors in order to coordinate. I couldn't ask her to buy an expensive bridesmaid dress when she isn't a bridesmaid, but if I just tell her to find a dress in orange, yellow or purple then hopefully she can find a cheaper dress. hope this helps!