Re: If you were going to buy a small stash...
I would do 3 flips and a dozen flats. Or maybe something like this? http://http://www.cottonbabies.com/p...roducts_id=148
If she has nothing at all to start with, that probably won't really be enough. If you're wanting to get her a full time stash, maybe she could get by with 4 or 5 covers and 18-24 prefolds/flats.