GIVE ANSWERS - English

Hello! at 1:30, she says, "that totally hints the sequel". I understand the misunderstanding. She talked really fast during that section. Hence cannot be used as a verb, you are correct.
At 1:09, she says, "that's okay. I'm angry too". Let's and that's does sound similar, so really focus on pronunciations.
A preview is completely different than a premier and I will tell you why:
A preview is like a trailer you would see at the movie theatre that shows before you actually view the movie you paid for. There are many "previews" before your movie plays. Some people call it the trailers, but most call it "the previews". So you would hear people say "let's not be late to the theatre so we don't miss the previews!"
A premier is a first-time showing of a new movie where only the actors and other makers of the movie can view it. I believe others may as well such as movie critics, who watch the movies to rate them for the public and give the movies awards. Premiers are the red carpet events where the actors would dress up and then enter a movie theatre.

Hopefully this helped!