Anytime there is a mafia team, I assume there is a GF type role with something to help them out. Be it a BPV or investigate immune. A cop would get a town result, but what would a rolecop get? So even with VT confirmed, it could be smoke and mirrors.
The way Tildey is talking, sounds like a caught scum though. Trying to survive another day, which makes me think she has something available to her tonight.
If we are 100% sure on the ON/EN killing ability of the SK and Mafia, I can see focusing toward SK tonight. But if we have any doubt on that, or think Tildey may have some other ability, it might be worth removing a her 1st.