You could just use strips of fabric and wrap it around their feet several times then tie it. As for the trimming, chickens spurs are kinda like human nails. You should be able to trim it back pretty short without hurting her. Just go slow. You'll do fine with it! Also, it's quite alarming that...
Soak the bumblefoot in warm epsom salt water for 15-20 minutes. After you've soaked it it should be a little bit softer. Get a small, clean knife and a pair of tweezers and start gently cutting the bumblefoot out. You may have to use the tweezers to pull out any loose pieces. After you've gotten...