Visually...wow, stunning.
Musically...there are moments when she does some shit with the phrasing that are WTF? in the unflattering way, or so they begin, but dammit, she makes it all come out right at the end, and when as after the tenor interlude on "Corcovado", one is left with the impression that, yeah, she not only meant to do that, but she meant for you to wonder if she meant to do that, question her at your own risk. "It Might As Well Be Spring" in in particular, that's an adventure, the band is like seriously, wtf? do you know what you're doing, but it all comes out at the end, and never once does one hear a scramble or panic on her part to make it so. Dom, otoh, is like a sheep-dog, keeping the rhythm section in line, saying just hold it down, it's going to come out right.
Really, I get the impression of somebody singing in English while still thinking in Portuguese. That doesn't explain the pitch of course, but pitch is just pitch, it's only bad if it's wrong, and if the phrasing is right, well, the pitch is not necessarily wrong as much as it is color.
Singer? I don't know...and really don't care. We got plenty of singers, always have. And really, if we must still play "Girl From Ipanema", let's start playing it with the rhythm of the Portuguese lyrics. At least sometimes.