I think she’s like our Magnus and she does these kinds of things because she knows it gets her attention (even though it’s negative attention).
I would recommend looking for another similar aged cat with a similar personality. Personality matches are the ones that work out the easiest. Since you’re considering it already…I will say I resisted this a bit for Magnus and finally gave in.
Likely, playing with another cat will teach her to be more gentle.
It’s impossible to sit and watch TV with Magnus when he’s in a mood. He will do increasingly dangerous things because we will get up. I have babyproofing, which he destroys regularly. One morning he destroyed 2 baby locks within 10 minutes…one by standing on it??? He’s 3 and hasn’t calmed down.
Here’s what I recommend outside of a second cat:
1- Catification. In some areas where she’s doing naughty things, you may be able to give her ‘yes’ places to do that.
2- bring toys for TV time and keep using that wand in different ways. Prevention rather than reaction and then rewards for good behaviour. Half the TV watching time Magnus is chasing the wand end of a toy while it’s under a blanket, but at least we can settle a little.
3- electronic toys might help to keep her busy. We’ve had mixed results.
4- moving things around so she can re-explore areas
5- rotating toys once a week. Store the others in a container with a lid and some catnip. Put the container into the freezer for 30 minutes before switching the toys out.
6- clicker training
7- AAC buttons (Lily Bunny and Stella the dogs and Billie the cat). At least enough for basic needs requests.
8- make a high pitch ‘eep!’ when she bites and pick her up and put her away from you. Cats don’t really understand time outs. Gotta ‘speak cat’s to train them.
9- provide boxes and craft paper when you can.
10- generously provide catnip
11- give all dry food through enrichment/movement. Check out DIY food puzzles on YouTube for cats
Honestly, some relief was acquired when we got Calcifer. But we recently got Ghost who has a similar energy level to Magnus and that’s finally settled things significantly.
Best of luck. Let us know what you try and if anything works or doesn’t work.