I've already seen the raws so I know what going to happen, but you forget that because Amora has helped her before she doesnt suspect that she'll do anything to her which is a bit naive of her, and the situation is obviously driven by emotions which shows that no matter how mature Leslie seems to be shes still a child; children tend to think that they know better and act accordingly which is why it is up to the adults surrounding her to watch out for her, which they obviously have assigned knights and such; honestly it's not that big of a deal
P.s. thank you for the update