i say throw her out in the pasture, let her run in out and get some grass in her for a few days. itll help her calm down, get the sugar out, etc. thats probably your easiest fix. if youre afraid to take her out of the stall, get someone who isnt and have them take her out. i agree with kevin, and pretty much everyone else...b calm supplements wont help, and changing her diet will only help after the sugar is out and over time. do away with the alfalfa unless she needs it (which she probably really doesnt) feed her regular hay, grain that isnt high in sugar or carbs, and keep her on a daily rotation of turnout.
thats just my thoughts.