So it's a vigilant who alerted about Drake's involvement in Law's escape and not Hawkins. The fact that Hawkins knew it was Drake, but didn't tell makes it seem possible that he probably wanted to understand his reason.
His last sentence to Drake is even "What is the purpose that you thought only you could think of" in the translation.
Furthermore, Hawkins was checking someone's survival percentage(most likely Luffy's), which implies to me that he is thinking of a betrayal possibility himself.
Sooner or later, all the SNs will turn down on Kaido