Girls, If she is waving and smiling at a guy she barely knows, is that been friendly or is it more?

She is looking at me with a smile when she sees me. Now she and I are talking in person too. This has just happened naturally. She is engaging in talking with me. When she heard my voice she turned around instantly to say hello to me and had a smile on her face. She is looking genuinely happy to see me
Girls, If she is waving and smiling at a guy she barely knows, is that been friendly or is it more?
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