I have that bed!It is so neat!
I had a doll cradle that was very similar, but the rockers took up too much room so I took it to Goodwill. Wish I would have kept it and just sawed off the rockers. I believe the bedding is from Bitty Baby. Before I knew about Bitty Baby, I bought a doll crib at a garage sale for $3.00, including bedding and mattress and pillow. I was disappointed as I thought the crib was wood, but it was heavy plastic. Looking at it later, I saw the crib said Bitty Baby on it. The bedding is identical to the one you just bought.
That bedding does belong to Samantha's bed. I've been wanting Samantha's bed for years, and Samantha is the only AG doll that I own. I don't really have space for Samantha's bed, but I still want it!http://mylittledollcorner.blogspot.com/
That's GREAT!!!! I just assumed the bedding was Bitty Baby, because It came with the crib I bought. I have two Samantha's, one PC and the other made in China. Both were bought used. I also bought a desk at another garage sale a few years ago that I paid $5.00 for and thought that was expensive. Now I looked up Samantha's retired items and found that it is her desk. Now I feel like I got a real bargain.
Very nice find and acquisition. :) Congratulations.