Hi Loz,
Alfalfa hay is full of calories, nutrients, and protein, and lower infiber. Fiber is what people use the Timothy Hay for to helpthe digestive system. Too muchalfalfamaybe too rich for your rabbit. Pamnock doesn't usehay as her rabbitry is very big and the rabbit pellets she uses hasenough of fiber in it. Since I only have one rabbit at themoment, soon to have a second, I prefer to give them the extra fiberthat the Timothy Hay provides.
As bunnyusa said, some people use it without any problems, but justkeep an eye on herweight. House rabbits can getvery fat on it and a fat bunny is not a healthy bunny.
Make sure you have a good piece of hard wood (fruit tree wood) so thatshe can keep her teeth filed down as the Timothy Hay also helps to takecare of that as well.
-Carolyn