emerge with purpose

Hello everyone, I had a question about this sentence:
"Laura emerges from a train with purpose, wheeling her case."
What does "with purpose" mean here? I looked up in dictionary and forum. Does it just mean that "she had a destination" (for example, heading home) when she "emerges"? I felt a bit strange when trying to understand this sentence.
The context is in the picture. Briefly, she arrives a trainstation and heads home with her case.
Thank you in advance !

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