I use hydrocolloid bandaging when treating bumblefoot, I like them. Should be ok for the toe I would think, and hopefully help prevent more irritation. Since she's been walking that way for a while, and is used to it, it probably is a little uncomfortable. You may need to gradually reposition, rather than do it all at once. Just depends on how things feel, and how she feels about it. Judgement call on your part. They are sometimes VERY resistant to change of any kind, even when it's in their best interests. It may take a bit for her to get used to, and accept the splinting. If she acts odd then it's possible it could draw bullying from others, so if that happens I would put her in a wire crate in the run with the others until she adjusts and acts more normal with them on. That way they can all still see each other, but she can't get hurt.
This is a really close up picture. I soaked it in Epsom salt and warm water and then put the antibiotic ointment on. You can see the ointment from the top of the foot view to give you an idea of where the sore and dark spots are. Also the top of her foot scales look yellow is that from being bandaged? I soaked in Epsom salt and water, put on the triple antibiotic ointment, a small hydrocolloid bandage over that area and then wrapped with vet wrap.