When AJ was forced to resign as the General Manager of RAW. She starts by saying that the allegations made against her (that she was fraternizing with John Cena) are completely untrue, but she feels she has to resign because it's either that or getting sacked in disgrace. Then she gives a speech about how she grew up homeless and thought she'd never amount to anything, and thanks the fans and Vince for giving her that chance... and then Vickie gets brought out to gloat.
Her match against Kaitlyn on the January 8, 2014 episode of Main Event becomes this once you're aware of AJ and Kaitlyn's real-life friendship and the fact that it was Kaitlyn's last match before she was released from WWE. The character of AJ Lee was probably glad to see her former friend-turned-rival gone for goodnote and even that's debatable, as they had been working together again in recent months against the Total Divas and Kaitlyn's exodus was never mentioned on-screen during the match, but the real AJ Lee was probably heart-broken that she wouldn't get to have her best friend working with her anymore.
Adding extra punch to render this even Harsher in Hindsight, AJ's real-life boyfriend CM Punk would also be quitting WWE soon after (at the end of the month specifically), making it a real one-two punch for AJ.