Lana's literally the thirsty character in this entire game. She keeps talking about wanting you to go rescue "cute swimmers" and being disappointed when it was her own Wishiwashi that she trained up.
Not thirsty per se, just putting on an act for Trial Goers. Think she's a ditzy flirt? Wrong! She's just setting you up to have her Wishiwashi knock you down in their School Form. She has you walk through the Trial Gate without giving you time to prepare yourself except with what you came in with.