Putting her in a dry lot at night would be the best thing because grass has a high sugar content at that time.
Yes, leaving a muzzle or a halter on a horse while it is turned out is very dangerous, it can cause death. I have heard some horrible stories!!
Download the worksheet to test your knowledge! How much hay and grain does your horse get every day? How much SHOULD your horse be getting each day? Many horses may not be getting what your feed bag recommends,...