Actually 2 lbs per week sounds pretty good to me. And it sounds like a weight loss schedule that is more likely to be maintained and retained than a more rapid one. I think that bouncing up and down on weight is worse than a slow change. That weight wasn't gained in a few weeks and to be successful in the permanent loss of it, it shouldn't go in a few weeks. As a side effect she is less likely to suffer sagging skin if the loss is more gradual.

The thyroid thing might be worth checking into though. It can be sort of a subtle problem. I'm thinking about your daughter too. I wish we had caught it earlier with one of our sons.