The rest of her debut era will undoubtably be HUGE, but honestly I don't see a whole lot of lasting power (yet).
She reminds me a lot of Duffy who was supposed to slay for several eras. And we know how that turned out.
She has a knack for writing catchy slightly off-centre hits but she doesn't seem to have the charisma or talent to back it up.
But I'm more than happy to be proven wrong, someone like her would be a welcome addition to the pop scene on a long term basis.
I'm just not convinced yet, and won't be until I see how her follow-up era goes.