I have no idea. I feel like there might be a direct to Nashville from LAX - I'm not going to go to Delta to look!! I'm NOT.
However, I would think that a non-direct flight would go through Chicago - O'Hare or Midway - or through Atlanta in the south.
I don't think it would have gone from LAX to NYC to Nashville.
Maybe she went to NYC to see her sisters, maybe she went to see TH and sex him up HARD, maybe she went to pick up that horrible dress she wore. We can be sure she wasn't stopping off in NYC to get it tailored.
If there is something going on, or something that went on - you'd have thought TH would have whispered some sweet, sweet post-coital advice about getting clothes tailored properly. Geez, TH, give a girl some fashion advice if she's giving up her foofoo.