Since the Interdimensional Flag War had just ended, rather dramatically at that, the Tritan Alliance had many things to do. Therefore, Michael didn't occupy too much of Alice's time to reveal a few things about Extraction. He didn't go into detail, but told her everything he'd revealed to the others before.
Alice was shocked, but it was not really a surprise that she had already expected Michael to have a similar power. She knew how to use her head, after all.
After his short talk with Alice, they reunited with the others and began to discuss the Interdimensional Flag War. The discussion didn't last long because the Professors and every other higher up of the Tritan Alliance was called to meet up. The post Flag War meeting was about to begin soon.