Honestly, I would avoid anything scented or flavored, if it were me. The last thing I wanted early in pregnancy was something with a strong scent. And there were some flavors that also were problematic (even though they're fine when I'm not pregnant). Some scents and flavors work really well for some mamas and are total nausea-inducers for others. (Last pregnancy my SIL gave me some bath oils and candles for Christmas and I literally had to sit and breathe through my mouth to keep from vomiting from the smells. It was awful, and she had no idea. I'd hate for you or your friend to go through that.)
So if it were me, I'd go with other forms of pampering, like microwaveable rice bags, lumbar cushions, soft slippers, massage tools, that sort of thing. A set of acupressure wrist bands (Sea Bands) might be nice if she's experiencing nausea. A gift card for a massage later in the pregnancy would be nice.
This Pregnancy Journal is a nice gift too (and not judgmental -- it's got small tidbits of interesting facts but nothing overtly mainstream or crunchy):http://www.toysrus.com/product/index...ductId=2787802
Or a plain journal or calendar would work too. I'd avoid actual pregnancy type books unless you know her approach -- if it's crunchy, then some Ina May books, or something by Penny Simkin would be great. A Dr Sears book, maybe. Otherwise I'd stick with a journal or a calendar and leave it be. A fun baby name book like The Baby Name Wizard could be good.
If you go with food, go with organic if you can, if the person prefers it. Otherwise I'd stick with something less perishable.
For me, I'm all about giving gifts that can be used. And when I'm pregnant, I'm very particular about what I put in and on my body. So being given a gift basket of certain foods or scented products, or a book that's not in line with our approach would in all likelihood be appreciated but not necessarily used.
I think sticking with more innocuous/neutral things are good, unless you know her very well in which case ignore that advice.
But even knowing her intimately, I would not give her anything scented.