Yes, my rabbit has had toys like this. He, too, eats them down to completely nothing! He had a ball and a carrot made from this, but he especially will chew willow down to nothing. I think that your best bet as far as the toy goes, is to limit her use of it. For example, only allow her to use it during the hours you let her out of play time, and with you supervising only. Don’t let her completely eat it to bits, until further notice from your vet. I know it would be awfully sad to take it away completely because every bunny likes different things, and it can be hard sometimes to find a toy just right for your bunny. For now, maybe just supervise/limit her with the toy. Also, be careful about what toys you leave overnight in her hutch. Maybe it could be from the bell inside? I bought my bunny a ball with a bell inside, and those toys I take away if they chew down to the bell, and supervise. Maybe you can try getting her another one without the bell, as well as limiting the use of the toy with the bell. For right now though, I’d call your vet. Anything with their G.I. tract is extremely dangerous, as you know. You are doing the right thing by noticing and being concerned. Best of luck 