I took away her Hangouts - I can't be watching over her shoulder, and a lot could happen in between times I can.
I've talked to DEX and one or two other geeks - we may actually have to develop something ourselves. It may be only browser-based, at first - as for smartphone/tablet use, we'd have to come out with versions for two OS's minimum - my stuff and her Nabi are Android, DEX's and Big Sister's smartphones are iOS, my laptop is Ubuntu, he has an Apple and a Windows system, and I have no idea what Big Sister's using.
If we come up with something for beta-testing, I'll let y'all know.