There is also this that needs to be considered,
@Underworld Broker
Does Scum!Nana target Gram, and then when questioned claim this? I think there is a plausible explanation, given that gram is likely post-silenced, that he was silenced because of this, but when he returns tomorrow he could debunk this wholesale. If he dies, gets janitored or whatever, then that by itself looks pretty terrible on her. I'd suggest waiting and seeing what Gram has to say here, and then acting. Killing her now isn't really savvy, in my opinion at least.
Brann's Beard raves a lot.