Insidious: Chapter 3 (2015)

Deliberate mistake: When Quinn is texting the boy next door, he responds too quickly for it to be real. She sends the "So you think I can stop traffic, huh?" text and gets a response within literally two seconds. She then sends the "Did I wake you up?" text and gets two responses within five seconds. Texts usually take several seconds (at least) to be delivered and opened, so even with great service and lightning-fast fingers, this is obviously far too quick.

Bride In Black: This is how you die.
Elise Rainier: Not today.

Trivia: The theater director who Quinn auditions for is played by James Wan, who directed the first two "Insidious" films and produced this third film.