Connecting Threads has a lovely collection of 30's prints right now. They have some patterns that look great with those fabrics. Good thing I have a stash that's way too much to ever use!
Good luck finding just the right thing.

My GD asked for the same thing. I made her the "French Roses" quilt by Heather French. It is raw edge applique and very easy. When it's washed the edge will fray, making it so soft looking. I used Paris Flea Market fabric by Three Sisters for Moda. I liked the fabric so much that I made a second top without using the burnt orange fabric and made it very simple. Now I've got to make backings and have them quilted. Best wishes.

I would consider working with precuts. The charms packs or jelly rolls are all from the same fabric line and would give you that coordinated look.

Have her show you a picture of something she has in mind, or show her some quilt designs. Everyone's idea is different.

Take a look at www.ladylikedesigns.com for some great patterns and inspiration. The designer is one of my favorites and when you see her patterns you will understand why. You can also find her on Craftsy where you can see all of her patterns. She is offering a free pattern called "My Daughter's Garden." It is exactly what you describe you are looking for.

I just typed in "shabby chic quilts" on Pinterest and there are tons of suggestions.

Tumbling charms pattern by MSQC with Tanya Whelan fabric. I'm working on one right now for new G daughter due in August...quick, easy and soooo pretty!