WOW! She is certainly a very responsible young woman. That will carry her very far in this world. With all her frugality I could suggest some books she would enjoy.
the Tightwad Gazette (get her the complete one rather than finding the 2 separate volumes that are in it) by Amy Daczyian (sp?), Make a mix cookery (eliason et al), Cheaper and Better by nancy Birnes, and Frozen Assets by Taylor-Hough.
Tightwad has tips and hints to save on EVERYTHING. Absolutely EVERYTHING. There is even an article in the second volume (included in the complete version) that tells ways to cut the cost of feminine hygiene products. I couldn't use that suggestion, but many others are awesome! It also has great recipes.
Make a Mix has recipes for many of the mixes that we buy in stores. they take minutes to prepare for the most part and once you try them you will be hooked. My kids won't eat a mix cake anymore. The only reason we ever get canned frosting is because jess eats a spoonful or two when PMS gets bad. LOL!
The taco seasoning mix is out of this world awesome. MUCH better and cheaper than the packets you buy at the store. It is truly mind blowing when you see how much cheaper the mix stuff is to make yourself. AND how easy it is.
Cheaper and Better has homemade equivalents for store items. Chocolate syrup, Baileys Irish Cream, and so many many many more things. Many are very interesting. It even has recipes for some health and beauty items.
Frozen Assets will have ideas to help her plan meals and even put a month (or 2 weeks or week) of lunches in the freezer. Then she can take them out and let them thaw or microwave them when she is at work or school. It really is helpful.
Here is a link to the Cheaper and Better book. It is out of print but very very useful.
http://www.amazon.com/Frozen-Assets...=sr_1_1?ie=UTF8&s=books&qid=1251940342&sr=8-1
Tell her to look on abebooks.com for ANY book she wants. Even with shipping the books are so inexpensive that it just doesn't make sense to buy anywhere else. I got all of Jessie's textbooks last year for under $30 through abe. The same books our school was using too!
Enjoy the "monster" of frugality you have created and inspired. It is a very useful skill.