Yeah, I know. Helena is also in the main story in Gotham City Streets, with Manbat, and she's also shown up in the Manhunter backups. Personally I think she should have been given a backup of her own, but that's neither here nor there.
Charlie on the other hand has been MIA since BftC. Technically she's meant to have been living with Helena since the end of BoP and she's meant to be showing up in the Batgirl title if I recall the giant board DC had that showed which characters where meant to end up which titles.