If you check the rules, you must send your package with a shipping service that provides tracking information.
Your SB is required to post a thank you thread with a couple of pictures.
If you know your SB got her gift, but didn't respond, you should contact the Admin.
http://www.yorkietalk.com/forums/yt-...gulations.html
These are great rules IMO. I stopped participating in the gift exchange on another forum when I never got even a pm of thanks year after year. It's discouraging to put a lot of time and effort into your gifts and not have them acknowledged.