Daneel had just finished cursing the Chief who was responsible for the excruciating pain that he had had to go through.
First of all, it was pretty amazing that he even had something like this. After taking Drakos, Daneel found out that it was a popular one-time trinket that bordered on becoming an Artifact. He was pretty impressed that someone had created it in this age, and he had warned Daneel that such a person was certainly someone with a lot of means.
This only made the caution that Daneel felt in the matter of the Chief increase.
That was when he received the frantic message from Faxul, who was actually unintelligible for a few moments before Daneel finally asked him to calm down, first, and then tell him what was wrong.
As Daneel heard about the weird metamorphosis that Cassandra had been through, his eyes opened wide, and he immediately got up from where he was and ran out.