Pixie seems to have forgotten she's a powerful teleporter recently, but a couple of folks have been weird in the Krakoa era. Plus, that random Bruce Lee jump suit she wears now.
Otherwise, Pixie should just teleport Red Hulk to space or something. Or the bottom of the ocean, since leaving him floating around in space might be unnecessarily cruel and possibly out of character. Depends on circumstances I guess, as she's shown she's willing to go there if need be.
I would be interested in seeing Red Hulk vs the pixie dust though. It's always a pleasure watching her make people trip balls.