Definitely, any friend of Mella's would have to be... tested for suitability. What happens afterwards would entirely depend on how Vanessë reacts to Nephie's antics. Maybe she reacts in a fun way that made Nephie want to keep teasing her? Or maybe she kept calm in a way that made Nephie want to know more? Or maybe she got Nephie out of trouble somehow? Especially if its despite Nephie causing trouble for her.