This generation uses the term "vintage" to mean mid-century stuff. Normally it does lean toward modern and definitely not kitschy or traditional. Some fabric stores have a category called "mid-mod" or just "mod"...you can take a look and see if these fabrics reflect what you already know about her tastes..i think this is what she might mean. As far as a pattern...i am guessing something linear no stars or flower patterns. both my kids are into the same type of thing so I'm just repeating what they tell me and what I see of what they like. To be safe, I'd at least ask for pictures or a real good description of what she envisions...then you can put your own spin to it.