It's actually a food delivery truck. She has all kinds of drinks, sandwiches, a few snacks and she usually has pizza in there too.
Just the name of the company has the word 'coffee' in it, so people call her the coffee girl, lol
She's in her early 30's, 32 I believe, and she has 3 kids(from what one of the workers said) and she recently bought or started renovating her house.