Hunters in Town

Hey Zer0, are you Antitribu? Or why was there a hunter without my character having any recent violations after I talked to Silvia Black?

Low humanity may attract hunters. Check if that's the case.
It could be that you violated the masquerade once, talked to Silvia to fix it, and the hunters didn't unspawn.

I don't understand your question. Are you saying you violated the masquerade, then paid Silvia to remove it, she did, and the hunter in the alley is still there? That's intended. Hunters who come to town won't give up the hunt, even over time. They are tenacious and will continue to look for you even after it appears you've gone. You will need to dispatch her in your own way. Make the hunter become the hunted.

I had the violation quite some time before and had it removed by sending the blood before killing Gimble. But the hunter only appeared after I met Silva.

According to my python coding, the hunter should've spawned as soon as you got the violation. Is it possible that you just didn't see her in the alley? She does walk around leaving the alley on occasion. Perhaps that's what happened, I'm not sure. The hunter violation spawns aren't connected to Silvia in any way.