I have to let everyone know, Miller's Girl must be one of the worst movies I have ever seen. It's worth watching to bask in the awfulness (if you have $6.99 to throw away).
Martin Freeman and Jenna Ortega are good actors, but what can they do with this script? Watching it, I kept saying "Nobody talks like that." Certainly not teenage schoolgirls, even the weirdest ones.
Ortega has made a specialty of very creepy young girls, but she is pushed into self parody here. Freeman's teacher buddy is so annoying you want to punch him. And his wife, well she appears to be a chronic alcoholic author but such a successful one that they can live in a vast and gorgeous mansion (Freeman plays a teacher, so he's not paying for it).
I suspect few Ortega fans will know or care who Henry Miller is, but the cream on the cake is the idea of assigning Henry Miller as an author who can teach you things about the structure of short stories. It's not quite as funny as Clint Eastwood's character reading Yeats in the original Gaelic in Million Dollar Baby...but it's pretty funny.
Of course, introducing Henry Miller is an excuse to have Freeman and Ortega get awkwardly smutty. Clearly this movie is going to live in my memory much longer than better ones.
ETA: I forgot. Also funny is Freeman's reaction to reading a sexy story written by Ortega. Not meant to be funny.