I have to admit that when I finished COHF the thought occurred to me that although Tessa and Jem would spend the rest of his life together, I didn't think at all she would have anymore children. The picture was painted very clearly of the terror and loss surrounding her when she fled her grown children rather than watch them grow old and die. And even though I didn't think she would have anymore children, I couldn't contain my scream of joy when she said she was pregnant. It was the most pleasant surprise of any of these books. I'm aware that magic is fading from all warlocks, so it's my hope that Tessa will SOMEHOW be able to abandon her immortal life, and grow old. I would love nothing more than for her to have that.