I have tried redirection when she has something of mine, and she generally will take what I redirect her to, for about five seconds, and then goes back after what she was after in the first place.
You just have to keep repeating this. Give her something equally exciting and/or remove the item she is chewing that you don't want her to chew on. Yes, they need to learn but you need sanity and peace of mind as well. I usually, even now with Dash being 5, tell him no, drop it, then give him something else and as soon as he puts it in his mouth I praise him. Repeat, Repeat, Repeat. When they make the correct choice by playing with their toy in the first place, I also praise. Praise when you find them doing something good. Don't only focus on the bad. One reason that she may be getting things you don't want her to is she gets you to pay attention to her. Negative or not, it is still attention.
When she jumps on us, we turn our back and she gets on her four feet and we tell her what a good girl she is then. Perfect!
Incidentally, the African violet incident occurred along with running up and down off all the couches and rooms in the house, right after she was taken on a very brisk 1 1/2 mile walk.
She's a pup. You will have this.she is not doing it out of spite, she is just a baby that has seemingly endless energy. She should never be out of your site.All plants and hazardous chemicals should be kept out of her reach.
We have tried all the tried and true methods of crating her, and she still cannot stand confinement. Frankly, since I'm getting really tired of being housebound 24/7, I'm thinking of putting her in there when we would like to go out anyway, and just let her mess it up, complain and whatever until she gets used to the fact that it's going to happen now and again. Right now what is happening is one of us always has to be home, and it's usually me. My "what the hell is this, I'm the boss around here" attitude is starting to rear it's ugly head.
We had the same problem, Dash never could be crated. We got an ex-pen and another dog which made him feel better but he eventually bent the bars and made his escape. He is free now but he is older. You can try those DAP things, I never had any success but some have. Try feeding her in her crate as well. You could take him to day care when you leave also. But you may have to go somewhere and put her in the crate. I think that is an unfortunate reality. I will not help her anxiety though and may make it worse.
You seem very stressed and I remember being there. This will pass. Eventually. Good luck.