does willes sister find out bella is a mermaid!!!

Ive seen all of season 3 of H2o just add water & Sophie is Willes sister and she never found out about Bella being a mermaid

no wills sister doesnt find out ive seen every episode of season 3, she nearly finds out but doesnt

not in season 3 because i watched it all but maybe she will if there is going to be a season 4