Well, given her attitude right now, it's possible that she hitched a ride. Maybe blackmailed some Wingulls or a Wailord into carting her around.

[All Riku knows is that she's ridiculous. What kinda fire type hops onto the back of a surfing Blastoise? Really.]

And I guess I could catch her, but I've already got Flare.

[On the other hand, she does keep stalking him. Argh.]