@PamO,
I, myself, am fourteen. I was actually looking through sites to find out how to make a homemade dildo for myself. I also currently date a 17 year old boy.
You're daughter is fourteen, which is an average age to be masturbating. I would be worried if she didnt... The generation today has brought early sex, etc. If she didn't have those items, i would think she was having sex.
Monitoring your daughter will only cause her to stray- trust me. Looking at her myspace and online history is pretty fascist. You need to trust her.
If she actually is acting inappropriotely, you will know about definite facts. When she does these things, she'll learn her lesson. Shielding her is just going to make you the enemy.
So, I think you should leave your daughter to her own privacy. Sex and toys are her business, and if you monitor, she'll just find other ways to screw around.