Scootie floats away into the black hole when being sucked out to the planet's surface, right?

So, Why does she float?

They show scenes of people standing on the surface, working, and Evil!Danny standing without a suit, so why would there be enough gravity to withstand the... wind(?) and other things since apparently their gravity isn't artificial ((though Doctor who has always been really bad about small things like gravity)) despite being a tiny planet with a hollow core.

So being sucked out with the oxygen and air apparently get her high up enough that the much much stronger gravity of the black hole took over, beyond the protection of the impossible planet.

Why hasn't this ever happened before to people going out on EVA's?