I am using a vast array of white on white fabrics, so I didn't have to settle on one large investment. I started with what I had, then when I visit quilt shops I pick up fat quarters of ones they have that catch my eye. (Or yards if I know I will want it for other projects) there are some wonderful good quality muslins on the market too, and muslin dyes well , she could dye her own (although a good black is one of the harder ones to achieve). Kona black is one of the best for not fading and standing the test of time