The main tropes we can see here are
weird girl (Emily) and
sexy priest, just like from the TV series "
Crap".
Well, of course,
secret relationships: despite Branwell's advice to abstain from such relationships, Emily and William begin secretly dating, which is particularly scandalous since he is the vicar of the church where her father works and she is a young lady in Victorian England. Upon Charlotte's return, he abruptly ends their relationship and she becomes desperate.