Ranboo's teleportation magic has always been one of the most instinctual parts of being a magical girl for them; usually, they think of where to go and then are there.
It's a rare power, so she's never been worried about it interacting poorly with other girls' magic, but she's realizing that may be a mistake. She appears to have teleported somewhere that doesn't look at all like either Florida or the labyrinth she was just in, and she can't sense the witch anymore.