That's possible. It could also be possible that she was just peeved that you were moving her while she was digesting. That's just one of many reasons most keepers feed in the snake's enclosure...

But, to find out if you are feeding enough, what is the weight of the snake? And what was the weight of the hopper? It's my understanding that a baby bp can take on a small adult mouse (approximately 20g), so it's possible if you fed it one hopper that it was still hungry...