Adriel knew it was time. The council had to be let in on the danger they were facing and then they would decide if the rest of the pack needed to be informed as well. The danger of sharing this information with the pack was the panic it would cause. People would become suspicious of one another.
A pack functioned best when there was unity and peace. Chaos was not something they needed at this moment, because if the doctor was successful in his experiments, then he would probably not hesitate to go public with his findings. And when that happened, humans would find out about the existence of shifters.
This would mean being hunted for their value according to what the doctor would claim or being imprisoned and exterminated out of fear that they could be dangerous. Humans had no information
