Here's a pretty pattern for a jelly roll.
https://www.pinterest.com/pin/414894184422081187/ I love Tula Pink. I think something that doesn't "cut" up the pretty prints too much would be great for her line of fabrics.
Or, here's a cute one.
https://www.pinterest.com/pin/418694096608133981/
I really love this one. But, I think it would be better suited to a charm pack.
https://www.pinterest.com/pin/563231497145355611/