AITAH For refusing to carry my GFs luggage that she over packed with unnecessary things?

Managed to book a short weekend trip to the countryside that was on a massive sale, with the holidays being over.

Long story short, my girlfriend packed like she was moving to another country and expected me to carry it to the car, out of the car, and into the place where we’ll be staying until Monday evening.

Each time, I reminded her that I had told her not to pack so much since she wouldn’t need it all. She never listened and proceeded to pack whatever she wanted.

Now she's sulking and refusing to talk.

My way of thinking is that if she packed it, she carries it.