I mean, that's totally what I thought happened and why I thought she was Mafia. We don't know for sure, there could be other explanations, but it seems like she did.
Except that the Mafia don't seem to be lacking in tools to meet their objective, Town is. The nature of how the balls have been described to work suggest to me that it's a designed-for-town mechanic, even if it'll be difficult for town to take advantage of.
By the way Retaliation, the fact that the game could be almost over if there were three neutrals, is precisely why I think there isn't three neutrals. Game could be over too quickly. At least one neutral is lying.
I wouldn't be upset if Shade came back. His bad turn on Day 2 aside, I still thought he was good track during Day 1. I guess I'd be most concerned that he was actually bluffing about his own action during D2.