Well, it was the same week-or-two time frame; correlation may not imply causality. Still, that was about the point that things turned around.

Regarding Coco: be more active with her. I can't really HAVE any thoughts because aside from a few threads with Rarity and the Hearts and Hooves thing, we've hardly SEEN her. She's also harder to get a read on because she's a very timid character, so it's a lot harder to get a good bead on what is and isn't consistent with her voice.

I simply haven't seen enough to have an opinion.