Since "Pitch Perfect 2", Hailee unfortunately has not made any movies that have done well. I'm not sure whether she made it before or after PP2, but her movie "Barely Lethal" didn't get much of a theatrical release (if it got one at all) and pretty much went straight to DVD. I didn't think it was that bad of a movie; if promoted well enough I think it could have made some money at the box office. It was kind of an odd mixture of a teen-oriented romance and an action comedy that didn't seem like it knew what it wanted to be ultimately.
Then she did "Term Life" and that was just a bad movie. I don't think there's anything that could have been done to save it. Her acting in it was fine; in fact I've never really seen her give a bad performance. She is always believable in whatever she does. It was just a poorly written and directed movie.
Her next movie "The Edge of Seventeen" sounds like it might be good. It seems like it is aimed more at the teenage girl audience that would listen to Hailee's music. The writer/director is a woman, and she wrote the Alexis Bledel movie "Post Grad", which I remember as being OK. The movie is also produced by James L. Brooks, and usually he has an eye for promising filmmakers (he discovered Wes Anderson and made "Bottle Rocket" with him).
I hope the movie is promoted well with a good trailer and everything and Hailee continues to make movies. She's a good actress in my opinion. Even in her "Rock Bottom" video she is giving a good, believable performance and it's only a music video!

Pitch Perfect 2 did a great job of giving her a new female fanbase and showing she has musical ability, and she's only 19 or so.

She went into music.

Well, she just costarred in a huge hit. So she's fine.

She did nothing of worth in Begin Again.
GoonGirl for Hire

See Begin Again

This. Kids grow up and want different things. Many great young actresses seem to want to sing these days.

I think it's fair to say that she hasn't lived up to expectations and probably never will. I just don't think that she is that dedicated to her acting career, she seems to be interested in pursuing other passions which is fine and good for her. I think everyone should lower their expectations and not expect to see another true grit out of her.

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They were just asking a question, not talking trash about her. Why are you so defensive about it?

What's your ambitious plan for your future?

Sixteen. And I haven't really gotten a real job yet other than occasionally assisting my father at his shop on busy days. I do have genuine ambitions for my future, though. Let me guess, now you are gonna laugh at what a "loser" I am compared to Hailee. Yeah, real classy and mature. Now what do you do?

And what happened with your career? And btw how old are you?