If the fabrics truly go together, just remember that she chose them and she loves them...she made her first quilting decision...you don't want to squash her enthusiasm. you will be able to get the center assembled and then ask her to help choose the borders....she may see where that tiny flange border in a bright version of the pink just sets the whole thing off perfectly....or a pale lavendar in the right shade....whatever looks good....auditioning fabrics helps us to decide on the last touches...why not her? and THENNNNNN you will be able to show her a choice of different threads which is that last layer of color.... and then when she decides, whichever way it goes is her choice and you and she will know it is HER quilt.... she will love it and you will love knowing that she appreciates all your hard work...last ditch? put all her scraps and your color choices in a gorgeous back art that may show her what you were talking about without sabotaging her choice....