Cassie surprised me in this book, too. I always wondered WHY Aldrea chose Cassie and not a fellow Hork-Bajir youth or Rachel (surely she sensed the aspirational future Hork-Bajir leader or the fearsome brave capacity in Rachel).
...Aldrea chose Cassie because she noticed how strong Cassie was, not strong like Rachel and Toby, but mentally strong willed, sympathetic with a great deal of empathy. Right before the ceremony started she started to feel admiration for Aldrea, and i think thats what drew Aldrea to her, someone who understood her actions...
What
filmstu2005 wrote answers the question for me. It finally makes sense.
I reckon the Anis had been offworld THAT many times, they felt another one would be simply put 'another one' in their list. Showing some sort of stress or awe in this aspect would only be repetitive.
On the topic of repetition, Cassie's stunt was a bit of a let down. Almost as if the writer got slack and ripped off the 'anvil'-idea from MM1.
Though I liked what Cassie had to do in order to succeed (6xmorphs consecutively, focus while fighting off Aldrea, concentrate on keeping her wings, NOT GET SHOT AT)... her stunt in the end, saved the day, yes!
I think, however, the book had a more memorable scenes towards the start. Where upon arriving just before the HB-Homeworld, they tangle with an Andalite fighter and 2 Yeerk-sentinels. There's some gold moments here, between Jake, Ax, Aldrea.