Shetland Sheepdog Question!?

I have a Sheltie and brush her weekly. Shedding is not bad with a little brushing. She loves to work, but wont care if she doesn't. she does agility and is very good at it, and seems to enjoy it. She is not the most affectionate dog. She is not overly cuddly or anything. She is always right at my feet though. Anywhere I am, she is always right there. I wouldn't trade her for anything....I'm looking forward to one day owning another.