Figtree,

Instead of the Photon, consider an Arc AAA light with an Energizer Lithium AAA (L92) battery. It is a much more robust light, very small and light and the battery capacity of the AAA is much higher. Oh, and the Arc is regulated as well.

As for SAK, I like the Leatherman Juice line. I think the S2 model is one of their lighter ones that still has scissors. However, the main advantage of the Juice is the pliers which I think are a good thing to have. This means the weight is 4.4oz, which is a bit much unless she is already carrying a full size SAK. For a step down in size, the Leatherman Squirt is popular.

In regards to OC spray, I think the 2oz, "flip top" spray from Fox Labs is a good choice. I think the "cone" stream is a good for general purpose.

-john