Hey Amber...please don't lose your mind over this sweetie - this could be alot worse - Giardia is treatable - you're getting treatment - so you'll have it under control soon - I'd be upset too but I don't like seeing you cry
I've had NO experience with Giardia - but it's more common than people realize - and you just need to be very careful and be on the lookout for the signs - and maybe always have to watch her for flareups -
I did find this site on Carrier dogs and Giardia - it may help you -
http://www.workingdogs.com/doc0119.htm