This may or may not help, but it sounds as though with them not being able to go outside it might just be worth giving it a try. I had much the same problem with one of my buns, and not only was he horrendously destructive but he was aggressive like I've never seen in a rabbit before, and I kind of reached breaking point when he then attacked and bit my daughter, just because she looked at him :shock:
It was at that point that I realised I either had to sort him out once and for all, or he would have to go back to the rescue he came from, because obviously my daughter was more important than him. I started searching on-line for ideas/advice, and the one thing that kept being mentioned was 'clicker training'.
I bought myself a clicker for £1 and a book of ebay called 'Clicking With Your Rabbit', and almost immediately I started to see a side to the bunny in my signature, Dipsy, that I had never seen before. It was like all of a sudden he had something to really think about and focus on, and he was being mentally challenged and stimulated, and because he was also such a naughty bunny, I'm wondering if your bun might benefit from something like this and that maybe she is also mentally unchallenged and bored, and so she does all these things to try and entertain herself.
Dipsy has all the toys, tunnels, big boxes, no end of things to play with, but I guess even these things are not actually mentally challenging though are they. I personally think that very naughty and sometimes even aggressive rabbits are actually like this because they are in fact the most intelligent of rabbits, and just need something in their life to really focus on.
Well, anyway, Dipsy didn't have to go back to the rescue and is no longer aggressive in any shape, and most days I spend about 20 mins with him and the clicker, and he absolutely thrives on it and has stopped chewing my new leather settee :shock: and everything else that he just seemed hell-bent on destroying. It took about 2 weeks of 10-15 minutes a day clicker training him, but even during that 2 weeks he was improving every day.
Another added bonus is that him and Pippa used to be absolute horrors about getting back in their enclosure, but now all it takes is a 'Dipsy, home' and he immediately goes home and Pippa goes with him, which was really interesting to discover, because I didn't think rabbits would be so keen to please their owners.
If you do decide to give this a go, I would say there are just 2 things you need to remember to help it work. The first would be finding something that Marnie absolutely adores to eat, and then only ever giving it to her during her clicker time, because that it is her real motivation, and with regards your commands, keep them very short. I only ever say Dipsy's name, and then home, when I want them to go back in their enclosure, or dinner, because they free-range all day, when they have their veg at midday, I will call Dipsy then, and it always makes me smile and I'm so very glad I didn't have to let him go, but I just feel so much love for him, when if he is over the other side of the house, and then I hear him and Pippa come racing over to where their bowl will be in the lounge. I will try to get a video of them. They sound like ponies to be honest running for their veg, and Dipsy is quite happy to be cuddled now, and he will also run up to me to have a fuss made of him, which I never expected to see him do, and I can pick him up for grooming etc.
It seems as though he was so mentally bored and frustrated and was such a naughty and to be honest horrible bunny, the way he attacked to the point that I had to get a piece of wood cut to the size I needed, so that I could use it as a shield. It really wasn't funny, and I have actually had to be referred to a hand surgeon to see in October, and it looks like Dipsy has done some nerve damage that may well need surgery to try and correct or at least improve on.
I know we all get bitten from time to time and curse the furry monsters jokingly, but Dipsy's aggression was not funny at all, and I guess like you are feeling now, I really couldn't carry on anymore with things how they were, but just wanted to let you know about the success I have had with Dipsy.