... if she doesnt want you to have one and thats just the way it is, you can always get something like a cold steel rajah II or cold steel spartan. ....
I'm gonna go out on a limb and say that if Mom doesn't like the idea of a fixed blade, she ain't gonna like a Rajah II either! I don't think the fact that the Rajah folds is gonna be the deal maker.
Just a thought.
Another big thing you have neglected to fill us in on, jwolfert, is if you have any folding knives. Are you jumping straight into fixed blades? If you have folders, and apparently you want to do light bushcraft, ask mom to let you buy a Vic Farmer. If you don't have any knives, ask mom to let you buy a Vic Farmer.