She was late for work, but still made time to pick up her favorite coffee drink.
Did she have to drink it very fast?
She always drinks her coffee fast because she loves it.
Even though your friend was late for work, most work places are accepting that you would stop for coffee on the way. She probably needed the caffeine to have a productive day. Most employment places are flexible for situations such as this.
But she's always late. Can't she just be on time, coffee or no?
That's fair. If she's consistently late, perhaps that should be dealt with.