If I read right it's been about 5 weeks since you first posted. If she's obviously limping then I would give some form of daily pain relief. Soft tissue injuries take months to heel. Time is a good heeler.
If she goes chronic lame and shows no improvement by the end of the year then it's only fair to let her go. If she seems field sound and you can keep her that way I would keep her occupied by bringing in daily, perhaps (not knowing your set up) bring in whilst you exercise the others then turn back out with them. I wouldn't stable for hours if she's going to go out and hooley round and it makes her unhappy. But a could of hours stabled should be fine. If it's routinely done she would get use to being stood in for 1-2 hours a day.
Also to keep her calm in the field and as she's young I would consider some form of in hand walk out on your hacking routes. Only 20 minutes but it keeps the brain stimulated. Not everyday but every other, again get a routine. Maybe walk out then stable whilst you exercise the others. So she knows that she's had her exercise and your doing her friends then she can go out.
My vet advised to keep my horse in work to keep the muscling to support his back issues when I talked about retiring mine. I would think a sensible in-hand walk out helps to keep the muscles in the legs but shouldn't cause additional problems if done controlled and regular.
If she goes chronic lame and shows no improvement by the end of the year then it's only fair to let her go. If she seems field sound and you can keep her that way I would keep her occupied by bringing in daily, perhaps (not knowing your set up) bring in whilst you exercise the others then turn back out with them. I wouldn't stable for hours if she's going to go out and hooley round and it makes her unhappy. But a could of hours stabled should be fine. If it's routinely done she would get use to being stood in for 1-2 hours a day.
Also to keep her calm in the field and as she's young I would consider some form of in hand walk out on your hacking routes. Only 20 minutes but it keeps the brain stimulated. Not everyday but every other, again get a routine. Maybe walk out then stable whilst you exercise the others. So she knows that she's had her exercise and your doing her friends then she can go out.
My vet advised to keep my horse in work to keep the muscling to support his back issues when I talked about retiring mine. I would think a sensible in-hand walk out helps to keep the muscles in the legs but shouldn't cause additional problems if done controlled and regular.