Why would the girl I like just walk between myself and another girl whilst we were talking?

I was having a conversation with a another girl at work and then the girl I like just comes along and walks between us, but says nothing and keeps walking. The thing is I was talking to this other girl in one of the aisles and the girl I like just happen to walk down this aisle, when she could have taken an easier walking root.

The girl I like just said nothing as she walked between myself and this other girl and just kept walking
Why would the girl I like just walk between myself and another girl whilst we were talking?
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