Newt ran down to the railroad tracks to free Tina, but it turned out the chains holding her had been jinxed. As he struggled to find the counter-curse, she seethed.
"Get me out of here, you dumbbell!" yelled Tina, which meant, "I love you and want to have your babies."
"Shut up, I'm trying to undo this stupid jinx!" retorted Newt, which meant, "Absolutely, but first we should get married in the biggest wedding Britain has seen since the Duke of York married Lady Elizabeth Bowes-Lyon."
"Well, hurry up or I'll punch you in your stupid face!" Tina answered tsunderely, which meant, "I won't even complain if you bring all your fantastic beasts with you when we move in together."
"You call me stupid when you're the one who started dating Achilles Tolliver because of something you read in a tabloid!" said Newt, which meant, "And I won't mind if you keep working as an Auror."
Finally, the jinx was undone just as a Muggle train came roaring down the tracks. Newt pulled Tina to her feet just in time, and the speeding train knocked those antlers off her head. Then Newt and Tina almost kissed... but didn't! Oh, isn't sexual tension the best?
"So, the Toenail of Icklibõgg is gone," said Credence, "and you've rescued Tina. What now?"
"Now we go to Crete to rescue Jacob!" Newt replied heroically.
Disappointed that they wouldn't be helping him launch his music career next, Credence began singing badly about his feelings and whatnot. By the way, it turns out Credence later becomes the father of Ludo Bagman. This is canon now.