get her a nice little swiss army knife , they come in all sorts of colors and tool options. i remember having fun with all the gadgets.
X2. My first knife was a SAK, and I too remember how much I liked all of its little gadgets. If she were to carry it, I think the PHRASECENSOREDPOSTERSHOULDKNOWBETTER. would be a little more accepting of a small SAK. SAKs are classics and I think PHRASECENSOREDPOSTERSHOULDKNOWBETTER. see them more as tools / key-chain-gadgets and not so much as being dangerous.
However, like OBG, I also see the value of having a locking blade. But I'll throw in that when my dad gave me my SAK he told me about the dangers of the knife folding up on me, and I never had a problem with it. Just my $.02
