How has this not been locked by now? Best get in while we still can huh?
You can still get back at her, even if she is reading these. If nothing else she's going to be paranoid that you've done any of them and will spend her life in fear.
Light a few cigarettes under her bed while she sleeps for a month or so. Once you stop she'll get the withdrawal symptoms and will probably stink like tobacco for a while. Alternatively, buy the nicotine patches and stick a couple to her back before school each day. Get her hooked on those puppies.
Being 16 she probably has her Ls. Cut a triangle from the right side of the license so she can't drive 'til she gets a new one (or, fuck it, just melt it). As part of this plan, use the nads hair remover in her shampoo, so her new license photo shows her at her best..
Use a mortar and pestle(or even a spoon on a chopping board) + a tiny bit of water to crush chilli seeds (buy some fresh) into the finest paste possible; rub this on her toothbrush or put in her pimple cream for maximum effect.
Put a needle/pin in the sole of her shoe so it JUST pokes out under the insole. Then, use pliars to cut the remainder of the length from underneath. There's no way you're getting that out of any shoe (other than volleys).
Find her bra size, steal her bras, then go buy three or four of the same pattern that are two or three sizes too big. They'll make her small rack look even smaller or she'll have to go ultra-slut and stuff them with tissues
Please do something to spite that little bitch. hahaha. I hope these help.