A couple of minutes later;
"You demanded the truth and this is the truth. Now that you know it, I'm asking for your assistance as the captain-ranked officer of WAMO. Either you help me solve this mission or cooperate by staying silent. Or else, I will be taking appropriate action to protect my mission."
Azzy decided to treat Snivy like a stranger as she treated him as one despite knowing that they were once teammates.
Hence, he used his rank and organization to put pressure on her. Snivy, on the other hand, felt like this was Azzy's true personality the same as the one he was displaying until now.
She was somehow happy with Azzy's behavior and agreed to assist him. What's more surprising fact is that she wasn't actually surprised to hear the vice principal was a prime suspect.
He kept his time traveling secret from her and didn't back up his claims with any statements either except for the findings at the bar.