I agree if it is her quilt and she wants purple, then purple it should be. I would also bind it in the purple so that there is just a touch of purple showing in the front to blend it all together.
BTW- Welcome to the board and welcome to quilting! Where do you live? There may be board members close by, or a quilting guild that could also lend a hand to help you learn. I'm self taught, but it came from lots of help here, and from co-worker who quilts and several of my customers. I now own my own quilting company but am always learning new things.
Phyllis
QuiltingGrannie
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