Personally, I would go back to her and ask her to describe what "rustic" means to
her.
Here's why:
When my SIL got married, a relative asked what colors she liked so she could make a quilt in those colors. My SIL replied "earth tones". What she envisioned was sage greens, forest greens, ocean blues, sky grays, sandy neutrals, etc.
What the relative made was a Lone Star with what
she considered to be "earth tones": chocolate brown, kelly green, bright yellow, fuchsia, and vivid orange. My SIL thought it was awful and stuck it in a closet for 25 years. I felt bad for both of them.
Please get clarification of what she sees in her head.