Right now she gets 2 flakes of Grass/Alfalfa Mix at night if she's in. Otherwise she's eats off a round bale all day. There's no grass at the moment, all snow. She gets about half a coffee can of sweet feed am + pm. I've owned her for a little over 5 years, and this has more or less been the same diet for all those years. Right now I keep her at a place, where the lady has it in her head that every horse needs grain. It will be interesting to see how she reacts to this change as well.
So if I slowly switch her over to 1/2 a can of alfalfa pellets, add a vitamin supplement, and have her given more flakes of hay at night if she's in, would that be all she needs? Nothing I'm missing out on?