It helps to find at least one item with color that you absolutely love. Starting with a key accessory like a lamp, a pillow, a throw, or rug makes the rest of the process easy because you have a palette/style to work with. To help her in the decision-making process, I've given some examples of how the blue curtains can be used as a jumping-off point for many different palettes, through a variety of accessories. I tried to use well-priced items that she can easily get in the city or order from the internet. Hopefully, something will catch her eye and we can build the room out from there.
Painting - Etsy - $70
Pillow - IKEA - $10
Blue Pillow - Etsy - $45
Ikat Pillow - Etsy - $35
Sunbird Pillow Cases - Anthropologie - $48
Rugs - Anthropologie
Labyrinth Pillow - Z Gallerie - $50
Sunshine Medallion Shams - Urban Outfitters - $30
Flower/Leaf pillow - Etsy - $30
Flower pillow - Etsy - $35
Blue leaves pillow - Etsy - $30 for pair
Flower pillow - Crate and Barrel - $35
This Multicolor Rug from IKEA would work with many of the pillows above and it's only $20!
Rugs from above...
Striped - IKEA - $13
Colorblock - IKEA - $18
I'd love to hear everyone's favorites...whether it's a whole set or just a particular item or color palette! Also, if you have other ideas and suggestions, send them my way :)