To this day I never get how Baby Daisy or Rosalina even exist... Like, PiT explains Baby Mario, Luigi, and Peach. Even then, it was told they returned to their own timeline. Neither Daisy or Rosalina appeared in that game (And iirc it was before Rosalina's debut).
So, uh, did they just flip-flop'd a switch, get sucked in by a portal, then landed on a kart and just said '**** logic I'm racing'?
I mean. They could nuke the entire world with a TIME PARADOX. I mean, God of War II did it, but still... are there any explanations behind this or is it just me who is stupid?