I really loved this installment of the series. I can see how originally it must have been meant as a trilogy, like it said on the cover. The ending was really satisfactory and she could have closed it off here.
However, in a way, this addition wasn't as good as the previous two. While I did enjoy it, but some aspects were obvious, and the end dragged. The big fight was hard to follow, and messy.
The best thing about the story was probably getting to know a who city full of Shadowhunters. If they ever make this one into a movie, that is one thing I'd love to see. The sad part of the story was really sad, but it felt unnecessary.
Clary had grown a bit, but not a lot. Wish she had matured a lot more by this point, but she did seem as clueless at times as she did in the first book. There it was understandable. At this point, it should not have been.
Overall, it would have been a satisfying end to the series. I'm reluctant to go on, as I feel it can only go downhill at this point.